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Safety and oncologic outcomes of open versus minimally invasive distal pancreatectomy for resectable pancreatic body and tail cancer
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作者 Hajime Imamura Tomohiko Adachi +5 位作者 Ayaka Kinoshita Takashi Hamada Hajime Matsushima Takanobu Hara Akihiko Soyama Susumu Eguchi 《Hepatobiliary & Pancreatic Diseases International》 2026年第1期83-90,共8页
Background:Minimally invasive distal pancreatectomy(MIDP)is increasingly being used,although its oncologic safety for pancreatic ductal adenocarcinoma(PDAC)remains controversial.In Japan,MIDP for PDAC has limited endo... Background:Minimally invasive distal pancreatectomy(MIDP)is increasingly being used,although its oncologic safety for pancreatic ductal adenocarcinoma(PDAC)remains controversial.In Japan,MIDP for PDAC has limited endorsement due to insufficient data.This study aimed to compare the perioperative and long-term outcomes of open distal pancreatectomy(ODP)and MIDP for PDAC.Methods:We retrospectively analyzed patients with resectable pancreatic body and tail cancer treated with ODP or MIDP(laparoscopic or robotic)between January 2007 and July 2022.The surgical procedures(ODP and MIDP)were compared and the patient characteristics,perioperative outcomes,and long-term outcomes were analyzed.We also compared the outcomes of patients with neoadjuvant chemotherapy(NAC)and without NAC.Results:A total of 72 distal pancreatectomies were performed(37 ODPs and 35 MIDPs).In the upfront group,MIDP resulted in significantly less blood loss than ODP(P<0.01),despite similar operative time.There was no statistically significant difference in the 2-year recurrence-free survival(RFS)rates between ODP and MIDP(39.7%vs.57.8%,P=0.60)or in the overall survival(OS)rates(66.7%vs.74.1%,P=0.43).Similarly,in the NAC group,MIDP resulted in significantly less blood loss than ODP(P=0.01);ODP and MIDP had similar 2-year RFS rates(41.7%and 60.0%,P=0.75)and OS rates(50.0%and 70.0%,P=0.36).The interval from surgery to adjuvant chemotherapy initiation did not significantly differ between the ODP and MIDP subgroups in both the upfront group(P=0.13)and the NAC group(P=0.14).The incidence of recurrence was 64.8%for ODP and 42.8%for MIDP(P=0.06).Both procedures showed similar distributions of local and distant recurrence.Conclusions:MIDP caused less blood loss and had similar oncologic safety compared with ODP.MIDP could become a feasible,minimally invasive option with sufficient oncologic safety for pancreatic body and tail cancers. 展开更多
关键词 Pancreatic body cancer Pancreatic tail cancer Minimally invasive pancreatectomy Laparoscopic distal pancreatectomy Robotic distal pancreatectomy Oncologic safety
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Defining and predicting textbook outcomes in laparoscopic distal pancreatectomy
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作者 Xiao-Rui Huang Deng-Sheng Zhu +6 位作者 Xin-Yi Guo Jing-Zhao Zhang Zhen Zhang Huan Zheng Tong Guo Ya-Hong Yu Zhi-Wei Zhang 《World Journal of Gastroenterology》 2026年第1期139-150,共12页
BACKGROUND Laparoscopic distal pancreatectomy(LDP)has emerged as the preferred approach for both benign and malignant lesions located in the pancreatic body and tail.Nevertheless,a notable deficiency persists in the a... BACKGROUND Laparoscopic distal pancreatectomy(LDP)has emerged as the preferred approach for both benign and malignant lesions located in the pancreatic body and tail.Nevertheless,a notable deficiency persists in the absence of a standardized,procedure-specific metric for evaluating and comparing surgical quality.A composite measure termed“textbook outcome(TO)”,which encompasses key short-term endpoints,has been validated in laparoscopic pancreatoduodenectomy but has not yet been established in dedicated LDP cohorts.The definition and prediction of TO in this context could aid in facilitating cross-institutional benchmarking and fostering advancements in quality improvement.AIM To establish procedure-specific criteria for TO and identify independent predictors of TO failure in patients undergoing LDP.METHODS Consecutive patients who underwent LDP at a single high-volume pancreatic center between January 2015 and August 2022 were retrospectively analyzed.TO was defined as the absence of clinically relevant postoperative pancreatic fistula(grade B/C),post-pancreatectomy hemorrhage(grade B/C),severe complications(Clavien-Dindo≥III),readmission within 30 days,and in-hospital or 30-day mortality.Multivariable logistic regression was employed to identify independent predictors of TO failure,and a nomogram was constructed and internally validated.RESULTS Among 405 eligible patients,286(70.6%)attained TO.Multivariable analysis revealed that female sex[odds ratio(OR)=0.62,95%confidence interval(CI):0.39-0.99]conferred a protective effect,while preoperative endoscopic ultrasound-guided fine-needle aspiration(OR=2.66,95%CI:1.05-6.73),pancreatic portal hypertension(OR=2.81,95%CI:1.06-7.45),and cystic-solid(OR=2.51,95%CI:1.34-4.69)or solid lesions(OR=1.91,95%CI:1.06-3.44)were independently associated with TO failure(all P<0.05).The derived nomogram exhibited modest discrimination and calibration when assessed in both the training and validation datasets.CONCLUSION The proposed LDP-specific definition of TO is feasible and discriminative,and the developed nomogram provides an objective tool for individualized risk assessment. 展开更多
关键词 Laparoscopic distal pancreatectomy Textbook outcome PREDICTORS Risk prediction model NOMOGRAM
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Role of post-operative X-rays in distal-radius fractures among pediatric patients 被引量:1
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作者 Ammar K Alomran Bandar A Alzahrani +4 位作者 Dana S Alamoud Layan S Alsultan Meshail M AlSaud Raneem G Althobaiti Badriah S Alruwaili 《World Journal of Orthopedics》 2025年第5期51-60,共10页
BACKGROUND In pediatric age group patients(<18 years old)treated operatively for distal radius/both bone fractures extending imaging beyond the initial postoperative period-particularly in uncomplicated cases-appea... BACKGROUND In pediatric age group patients(<18 years old)treated operatively for distal radius/both bone fractures extending imaging beyond the initial postoperative period-particularly in uncomplicated cases-appears to provide limited additional benefit.AIM To determine the necessary number of follow-up X-rays to use resources efficiently.METHODS Participants included in this study are pediatric age group patients who were treated operatively for distal radius/both bone fractures and were identified from a prospected collected data from the operating room database between the years 2009 and 2017.The data in the study included patients who had distal radius fractures and underwent fixation surgery(n=88).RESULTS When assessing the difference in the odds of conducting 1 or less X-ray compared to 2 or more X-rays in regard to the type of fixation,the only significant difference is the closed reduction fixation method.Patients who underwent closed reduction method procedure have significantly lower odds of having 2 more X-rays compared to those who didn’t have closed reduction method.Open reduction,internal fixation,and other fixation methods(close reduction and internal fixation,debridement,or epiphysiodesis)have higher odds of having two or more X-rays compared to patients who did not receive these methods;however,these odds are not statistically significant.CONCLUSION The findings of this study reveal notable absence of a statistically significant association between the frequency of postoperative X-rays and the outcome of children with distal radius fractures. 展开更多
关键词 X-RAY distal radius fractures PEDIATRICS ORTHOPEDIC FRACTURES
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Comparison of prognostic factors and their differences in intrahepatic,hilar,and distal cholangiocarcinoma:A systematic review and meta-analysis 被引量:1
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作者 Muhammad Masroor Hussain Ju-Mei Wang +2 位作者 Ao-Qiang Zhai Fu-Yu Li Hai-Jie Hu 《World Journal of Gastrointestinal Oncology》 2025年第7期406-417,共12页
BACKGROUND Cholangiocarcinoma(CCA)comprises heterogeneous malignancies arising at different anatomical locations:Intrahepatic cholangiocarcinoma(IHCC),perihilar cholangiocarcinoma(PHCC),and distal cholangiocarcinoma(D... BACKGROUND Cholangiocarcinoma(CCA)comprises heterogeneous malignancies arising at different anatomical locations:Intrahepatic cholangiocarcinoma(IHCC),perihilar cholangiocarcinoma(PHCC),and distal cholangiocarcinoma(DCC).These subtypes exhibit distinct clinical behaviors,treatment approaches,and outcomes.Despite advances in surgical and adjuvant therapies,the prognostic implications of tumor location remain unclear and inconsistently reported.Understanding these variations is essential for personalized management and staging refinement.We hypothesized that the anatomical subtype of CCA significantly influences prognostic outcomes and pathological features.AIM To compare prognostic outcomes and clinicopathological characteristics among IHCC,PHCC,and DCC based on current evidence.METHODS A systematic review and meta-analysis were conducted in accordance with PRISMA guidelines.PubMed,EMBASE,and the Cochrane Library were searched,yielding 11 eligible retrospective comparative studies involving 14484 patients(IHCC:6260;PHCC:6895;DCC:1329).Outcomes assessed included overall survival(OS),lymph node metastasis,neural invasion,and vascular invasion.Statistical analyses were performed using RevMan 5.3 and Stata 13.0.RESULTS DCC demonstrated the most favorable prognosis among all subtypes.Despite the highest lymph node metastasis rate(DCC:56.9%),it was associated with better OS than PHCC and IHCC.Vascular invasion was more prevalent in IHCC(OR=1.66,95%CI:1.22-2.28,P=0.001).OS comparisons showed no significant difference between PHCC and IHCC(HR=1.02,P=0.88),while DCC showed consistent trends toward better survival against both.CONCLUSION Anatomical subtype is a significant prognostic factor in CCA.DCC patients experience superior outcomes despite aggressive lymphatic spread,suggesting better resectability and surgical outcomes.These insights underscore the need for subtype-specific management strategies and future prospective validation. 展开更多
关键词 CHOLANGIOCARCINOMA INTRAHEPATIC Perihilar distal Prognosis Lymph node metastasis Survival META-ANALYSIS
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Osteosynthesis of the Displaced Fractures of the Distal Radius Treated with New-Clip® Plate: Case Study in the Basse Terre Hospital
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作者 Johnny Cizemba Hugues Albini Christian Dumontier 《Open Journal of Orthopedics》 2025年第2期88-101,共14页
Background and Objectives: The distal radius fracture (DRF) is a major public health problem in northern countries. Its frequency is constantly increasing. The locked anterior plate with its well-established biomechan... Background and Objectives: The distal radius fracture (DRF) is a major public health problem in northern countries. Its frequency is constantly increasing. The locked anterior plate with its well-established biomechanical properties, offers a reliable alternative. The aim of this study was to evaluate the radiological, the functional results and to determine the factors of poor postoperative prognosis of DRF treated with Newclip radial plates®. Methodology: This prospective cohort study evaluates the radiological and functional outcames of displaced radius fractures (DRFs) in patients ≥50 years old treated with Newclip® (locked anterior plates) at the Basse-Terre Hospital in Guadeloupe from 2022 to 2024. The patients were categorized into those with epiphyseal involvement (E1 - E4) and without epiphyseal involvement (E0) based on Laulan’s MEU classification. Radiological parameters (distal radio-ulnar index (DRUI), radial inclination frant view (IRF), radial inclination sagittal view (IRS) were assessed pre and post-operatively. Functional recovery was evaluated at 12 months using the QuickDash questionnaire. Results: Falls were the most common cause of fracture. Post-operatively, SRI was the least restored parameter. Poor prognostic factor for SRI improvement included posterior commimution and unstable fractures. Factors associated with higher QuickDash scores included unstable factures, unrestored DRUI, low plate position, metaphyseal features, and ulnar features. Conclusion: The anterior locking plate osteosynthesis is reliable treatment option with excellent functional outcomes. 展开更多
关键词 Fracture distal Radius Surgical Treatment Newclip® Plate Basse Terre
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Clinical review of robotic distal pancreatectomy
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作者 Naeun Hwang Sam Reddish +1 位作者 Jonathan Koea Sanket Srinivasa 《Laparoscopic, Endoscopic and Robotic Surgery》 2025年第2期80-83,共4页
Robotic distal pancreatectomy(RDP)is being increasingly used in centres with access to the robot and offers technological improvements over conventional laparoscopy.Some studies have also shown superior outcomes compa... Robotic distal pancreatectomy(RDP)is being increasingly used in centres with access to the robot and offers technological improvements over conventional laparoscopy.Some studies have also shown superior outcomes compared with laparoscopic and open approaches.However,robotic technology is not widely available currently.This review aims to compare RDP with open and laparoscopic distal pancreatectomy,covering the basics of the RDP technique and highlighting the current nuances of the evidence pertaining to RDP with respect to clinical effectiveness and cost‒benefit analysis. 展开更多
关键词 distal pancreatectomy Robotic distal pancreatectomy Robotic surgery
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Indications and techniques for minimally invasive spleen-preserving distal pancreatectomy
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作者 David Gutierrez Blanco Marcio Apodaca-Rueda +4 位作者 Carlos T Maeda Camila G C Y Carvalho Erin Baker John B Martinie Raphael L C Araujo 《World Journal of Gastrointestinal Surgery》 2025年第10期81-89,共9页
Spleen-preserving distal pancreatectomy(SPDP)has gained increasing attention as a safe and effective alternative to distal pancreatectomy with splenectomy,particularly for benign and low-grade malignant lesions of the... Spleen-preserving distal pancreatectomy(SPDP)has gained increasing attention as a safe and effective alternative to distal pancreatectomy with splenectomy,particularly for benign and low-grade malignant lesions of the pancreatic body and tail.This narrative review evaluates the current evidence,technical considerations,and disease-specific indications for SPDP.Literature was reviewed using up to date scientific evidence and most recent national and international guidelines.Studies addressing SPDP outcomes,splenectomy complications,and disease-specific oncologic principles were included.Spleen preservation has been associated with reduced rates of postoperative infections,thromboembolic events,and longterm immunologic compromise,without compromising oncologic outcomes in selected patients.Indications favoring SPDP include pancreatic neuroendocrine tumors,intraductal papillary mucinous neoplasms,and solid pseudopapillary neoplasms.Although current guidelines generally recommend splenectomy for pancreatic ductal adenocarcinoma,emerging data suggest that spleen preservation may be feasible in highly selected cases.Technical approaches—primarily the Kimura and Warshaw techniques—enable safe dissection and splenic vessel management,particularly with the support of minimally invasive platforms.In conclusion,SPDP should be considered in appropriately selected patients to reduce morbidity while preserving long-term immune function.Future randomized studies are warranted to define oncologic safety and refine indications across tumor types. 展开更多
关键词 PANCREAS distal pancreatectomy Spleen preservation Minimally invasive surgery
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New surgical approach for distal clavicle fractures:A case report
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作者 Wen-Tao Hu Zi-Yan Zhang +1 位作者 Ji Qu Cheng-Dong Piao 《World Journal of Clinical Cases》 2025年第18期101-110,共10页
BACKGROUND Clavicle fractures are a common type of fracture that often occurs after high-energy trauma.The treatment methods for clavicle fractures remain controversial.Both locking compression and hook plates are rec... BACKGROUND Clavicle fractures are a common type of fracture that often occurs after high-energy trauma.The treatment methods for clavicle fractures remain controversial.Both locking compression and hook plates are recommended.CASE SUMMARY A 44-year-old male suffered an injury during skiing.Radiography revealed a right-sided distal clavicular fracture.The fracture was treated using a hook plate due to its small size.During the surgical procedure,Kirschner wires were used to drill holes in the acromion.The end of the hook plate was inserted into the hole rather than below the edge of the acromion.CONCLUSION One year later,imaging revealed complete healing of the fracture,and the hook plate was removed.The patient was satisfied with the course and treatment results.Additionally,a new classification system was proposed based on the degree of injury to the distal clavicle joint surface.The incidence of postoperative complications associated with the use of hook plates for clavicular fracture treatment is relatively high.Complications can be reduced by changing the hook plate placement. 展开更多
关键词 CLAVICLE distal clavicle fracture Hook plate COMPLICATIONS CLASSIFICATION Classification system Case report
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Comparing efficacy and safety of monotherapy and combination therapy with tadalafil,tamsulosin,and silodosin for distal ureteral stones:A systematic review and meta-analysis
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作者 Sholeh Ebrahimpour Mona Kargar +3 位作者 Mohadeseh Balvardi Ozra Tabatabaei-Malazy Pardis Asadi Mehdi Mohammadi 《Asian Journal of Urology》 2025年第2期189-203,共15页
Objective:Medical expulsive therapy(MET)is a suitable option for facilitating stone expulsion in patients with distal ureteral stones.This meta-analysis was conducted to compare efficacy and safety of monotherapy and ... Objective:Medical expulsive therapy(MET)is a suitable option for facilitating stone expulsion in patients with distal ureteral stones.This meta-analysis was conducted to compare efficacy and safety of monotherapy and combination therapy with tamsulosin,silodosin,and tadalafil on stone expulsion rate(SER)and stone expulsion time(SET),as well as their comparative safety,numbers of colic pain episodes,and need for analgesics.Methods:Randomized controlled trials were retrieved by searching PubMed,Scopus,and Web of Science up to November 27,2023.Hand-searching was also conducted in Google Scholar to find additional records.Papers in English that compared the safety and efficacy of at least two of the above agents in adults with distal ureteral stones≤10 mm were included.Results:In total,27 studies were identified(six studies through database searches and 21 through checking reference lists and hand-searching in Google Scholar).More than half of them(n=15,56%)were conducted in India.The SER significantly improved with silodosin compared with tamsulosin(odds ratio[OR]2.24,p<0.001),whereas the difference in SET was non-significant.Tadalafil achieved a significantly higher SER compared with tamsulosin(OR 1.42,p=0.042)without any difference in SET.Subgroup analysis of 5-and 10-mg doses of tadalafil showed no significant difference in SER or SET.We found no significant difference in need for analgesics(mean difference(MD−53.73,p=0.2)or the mean number of colic episodes(MD−0.42,p=0.060)between tadalafil and tamsulosin.SER or SET was not significantly different between silodosin and tadalafil.Tadalafil plus tamsulosin led to a significantly higher SER(OR 1.87,p<0.001)and SET(MD−2.99,p=0.002)compared with tamsulosin,without any significant difference in adverse effects.Conclusion:Compared with tamsulosin,SER significantly improved with silodosin,tadalafil,and the combination of tadalafil plus tamsulosin.Meanwhile,the difference in SET was only significant between tadalafil plus tamsulosin versus tamsulosin.It appears that tadalafil and silodosin have similar efficacy in SET and SER.All medical expulsive therapies had comparable safety. 展开更多
关键词 TAMSULOSIN TADALAFIL SILODOSIN distal ureteral stone Expulsion rate Expulsion time Safety
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Impact of non-alcoholic hepatic steatosis on prognosis and clinical outcomes in gastric cancer patients undergoing laparoscopic distal gastrectomy
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作者 Yi-Fan Zou Yi-Gang Zhang +14 位作者 Zi-Chu Zhao Zheng Li Hong-Da Liu Qing-Ya Li Ze-Tian Chen Cheng-Jun Zhu Hai-Tao Liu Ji-Wei Wang Feng-Yuan Li Lin-Jun Wang Dian-Cai Zhang Li Yang Hao Xu Ze-Kuan Xu Sen Wang 《World Journal of Gastrointestinal Surgery》 2025年第9期108-119,共12页
BACKGROUND Non-alcoholic fatty liver disease(NAFLD)is increasingly recognized for its role in the pathogenesis of various cancers.However,its impact on gastric cancer(GC)outcomes,particularly in patients undergoing la... BACKGROUND Non-alcoholic fatty liver disease(NAFLD)is increasingly recognized for its role in the pathogenesis of various cancers.However,its impact on gastric cancer(GC)outcomes,particularly in patients undergoing laparoscopic distal gastrectomy(LDG),remains unclear.AIM To investigate the clinical and prognostic impacts of NAFLD on GC patients undergoing LDG.METHODS In this retrospective cohort study,we collected clinical data from 1122 GC patients who underwent LDG at the Gastric Cancer Center of the First Affiliated Hospital of Nanjing Medical University between January 2020 and December 2022.Propensity score-matching(PSM)was used to mitigate the bias to compare the oncological and surgical outcomes between the two groups.Survival analysis was also performed to evaluate NAFLD as a prognostic factor.RESULTS PSM yielded a balanced cohort of 260 patients(52 with NAFLD and 208 controls)from the original cohort.No differences in clinicopathological characteristics,including surgery time,complications,T stage,N stage,p-tumornode-metastasis stage,neural invasion,vascular invasion,total number of retrieved lymph nodes,positive retrieved lymph nodes and positive lymph nodes rate,were observed between the two groups.Overall survival was comparable between two groups(Log-rank P=0.49),whereas progression-free survival(PFS)in the NAFLD group was inferior to that in the control group(Log-rank P=0.016).Univariable Cox regression analysis further confirmed that NAFLD was an unfavorable prognostic factor for PFS.CONCLUSION GC patients with NAFLD exhibited inferior PFS,suggesting that addressing NAFLD-related metabolic alterations may enhance clinical outcomes.Future investigations should explore the mechanistic links between NAFLD and GC progression and consider integrated therapeutic strategies. 展开更多
关键词 Non-alcoholic fatty liver disease Gastric cancer Laparoscopic distal gastrectomy PROGNOSIS Metabolic dysregulation
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Distal small bowel resection with preservation of the terminal ileum suppresses hepatic gluconeogenesis via the Prevotellaceae_NK3B31_group-mediated 7-KLCA-FXR axis
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作者 Chi-Ying Xu Zhi-Hua Zheng +3 位作者 Kun Yang Ren-Ran Wu Jia-Qing Cao Jin-Yuan Duan 《World Journal of Gastroenterology》 2025年第43期135-145,共11页
BACKGROUND Distal small bowel resection with preservation of the terminal ileum(DBRPI)significantly improves glucose metabolism in rats.AIM To explore the underlying mechanisms of DBRPI in improving glucose metabolism... BACKGROUND Distal small bowel resection with preservation of the terminal ileum(DBRPI)significantly improves glucose metabolism in rats.AIM To explore the underlying mechanisms of DBRPI in improving glucose metabolism.METHODS Following 8 weeks of a high-fat diet,the rats were randomly divided into the DBRPI group and the sham operation group.After surgery,body weight and glucose tolerance were monitored.At 6 weeks post-surgery,the composition of intestinal microbiota,bile acid levels,and the expression of farnesoid X receptor(FXR),Takeda G protein-coupled receptor 5,and glucagon-like peptide-1(GLP-1)in the ileum were examined.Additionally,the gene expression of key enzymes involved in gluconeogenesis in the liver was evaluated.RESULTS DBRPI reduced body weight and improved glucose tolerance.At 6 weeks postsurgery,the abundance of Prevotellaceae_NK3B31_group and the level of 7-ketolithocholic acid(7-KLCA)were significantly increased,while the abundance of Desulfovibrio fairfieldensis and the level ofα-muricholic acid were significantly decreased.The expression of FXR and GLP-1 in the terminal ileum was significantly upregulated.Furthermore,the expression of key gluconeogenic enzyme genes,glucose-6-phosphatase(G6PC)and phosphoenolpyruvate carboxykinase 1(PCK1),was significantly downregulated.Correlation analysis showed that the Prevotellaceae_NK3B31_group was positively correlated with 7-KLCA and FXR,and negatively correlated with glucose tolerance,α-muricholic acid,G6PC,and PCK1.CONCLUSION DBRPI inhibits hepatic gluconeogenesis and improves glucose metabolism.The mechanism may be related to activation of the 7-KLCA-FXR signaling pathway mediated by the Prevotellaceae_NK3B31_group. 展开更多
关键词 Bariatric surgery Mid to distal bowel resection Gut microbiota Bile acids GLUCONEOGENESIS
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Post-operative imaging in pediatric distal radius fractures:When tradition meets evidence
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作者 Amr Elshahhat 《World Journal of Orthopedics》 2025年第8期6-13,共8页
Routine postoperative radiographs after surgical fixation of pediatric distal-radius fractures have long been part of standard care.Yet growing evidence shows that these images rarely change management in stable cases... Routine postoperative radiographs after surgical fixation of pediatric distal-radius fractures have long been part of standard care.Yet growing evidence shows that these images rarely change management in stable cases,adding unnecessary cost,radiation exposure,and clinical burden.A recent study highlights this issue and questions whether routine imaging truly benefits patient outcomes.As orthopedic care shifts toward more patient-centered and value-driven models,there is increasing support for the judicious use of radiographs,reserving imaging for cases where clinical examination or patient symptoms suggest a potential problem.This shift would reflect a broader movement within orthopedic practice:Aligning tradition with necessity,and optimizing care based on evidence rather than habit. 展开更多
关键词 Pediatric distal radius fracture Loss of reduction Follow-up radiographs Cast immobilization K-wire fixation Re-displacement
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Biomechanical Study of Different Scaffold Designs for Reconstructing a Traumatic Distal Femur Defect Using Patient-Specific Computational Modeling
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作者 Hsien-Tsung Lu Ching-Chi Hsu +1 位作者 Qi-Quan Jian Wei-Ting Chen 《Computer Modeling in Engineering & Sciences》 2025年第2期1883-1898,共16页
Reconstruction of a traumatic distal femur defect remains a therapeutic challenge.Bone defect implants have been proposed to substitute the bone defect,and their biomechanical performances can be analyzed via a numeri... Reconstruction of a traumatic distal femur defect remains a therapeutic challenge.Bone defect implants have been proposed to substitute the bone defect,and their biomechanical performances can be analyzed via a numerical approach.However,the material assumptions for past computational human femur simulations were mainly homogeneous.Thus,this study aimed to design and analyze scaffolds for reconstructing the distal femur defect using a patient-specific finite element modeling technique.A three-dimensional finite element model of the human femur with accurate geometry and material distribution was developed using the finite element method and material mapping technique.An intact femur and a distal femur defect model treated with nine microstructure scaffolds and two solid scaffolds were investigated and compared under a single-leg stance loading.The results showed that the metal solid scaffold design could provide the most stable fixation for reconstructing the distal femur defect.However,the fixation stability was affected by various microstructure designs and pillar diameters.A microstructure scaffold can be designed to satisfy all the biomechanical indexes,opening up future possibilities for more stable reconstructions.A three-dimensional finite element model of the femur with real bone geometry and bone material distribution can be developed,and this patient-specific femur model can be used for studying other femoral fractures or injuries,paving the way for more comprehensive research in the field.Besides,this patient-specific finite element modeling technique can also be applied to developing other human or animal bone models,expanding the scope of biomechanical research. 展开更多
关键词 Patient-specific modeling distal femur bone defect microstructure design finite element analysis
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Multimodal treatment combining neoadjuvant therapy,laparoscopic subtotal distal pancreatectomy and adjuvant therapy for pancreatic neck-body cancer:Case series
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作者 Jia Li Xi-Tao Wang +7 位作者 Yi Wang Kang Chen Guo-Guang Li Yan-Fei Long Mei-Fu Chen Chuang Peng Yi Liu Wei Cheng 《World Journal of Gastrointestinal Surgery》 2025年第1期91-104,共14页
BACKGROUND Pancreatic cancer involving the pancreas neck and body often invades the retroperitoneal vessels,making its radical resection challenging.Multimodal treatment strategies,including neoadjuvant therapy,surger... BACKGROUND Pancreatic cancer involving the pancreas neck and body often invades the retroperitoneal vessels,making its radical resection challenging.Multimodal treatment strategies,including neoadjuvant therapy,surgery,and postoperative adjuvant therapy,are contributing to a paradigm shift in the treatment of pancreatic cancer.This strategy is also promising in the treatment of pancreatic neckbody cancer.AIM To evaluate the feasibility and effectiveness of a multimodal strategy for the treatment of borderline/locally advanced pancreatic neck-body cancer.METHODS From January 2019 to December 2021,we reviewed the demographic characteristics,neoadjuvant and adjuvant treatment data,intraoperative and postoperative variables,and follow-up outcomes of patients who underwent multimodal treatment for pancreatic neck-body cancer in a prospectively collected database of our hospital.This investigation was reported in line with the Preferred Reporting of Case Series in Surgery criteria.RESULTS A total of 11 patients with pancreatic neck-body cancer were included in this study,of whom 6 patients were borderline resectable and 5 were locally advanced.Through multidisciplinary team discussion,all patients received neoadjuvant therapy,of whom 8(73%)patients achieved a partial response and 3 patients maintained stable disease.After multidisciplinary team reassessment,all patients underwent laparoscopic subtotal distal pancreatectomy and portal vein reconstruction and achieved R0 resection.Postoperatively,two patients(18%)developed ascites,and two patients(18%)developed pancreatic fistulae.The median length of stay of the patients was 11 days(range:10-15 days).All patients received postoperative adjuvant therapy.During the follow-up,three patients experienced tumor recurrence,with a median disease-free survival time of 13.3 months and a median overall survival time of 20.5 months.CONCLUSION A multimodal treatment strategy combining neoadjuvant therapy,laparoscopic subtotal distal pancreatectomy,and adjuvant therapy is safe and feasible in patients with pancreatic neck-body cancer. 展开更多
关键词 Pancreatic neck-body cancer Multimodal treatment Neoadjuvant therapy Laparoscopic subtotal distal pancreatectomy Adjuvant therapy
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Minimally invasive plate osteosynthesis for distal radius fractures using a 3-point positioning technique
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作者 You-You Ye Zhao-Qing Shen +1 位作者 Chun-Ling Wu Yan-Bin Lin 《World Journal of Orthopedics》 2025年第7期92-100,共9页
BACKGROUND The volar approach with plate fixation is the gold standard for treating distal radius fractures,often requiring incision of the pronator quadratus(PQ)muscle.Preserving the PQ during surgery may facilitate ... BACKGROUND The volar approach with plate fixation is the gold standard for treating distal radius fractures,often requiring incision of the pronator quadratus(PQ)muscle.Preserving the PQ during surgery may facilitate early postoperative recovery.However,conventional minimally invasive plate osteosynthesis(MIPO)techniques frequently necessitate multiple(3-4)intraoperative fluoroscopic adjustments to achieve optimal plate positioning,which can inadvertently damage the PQ muscle.Based on our clinical observations,we developed a novel 3-point positioning technique to minimize PQ injury while ensuring accurate plate placement.Preliminary results demonstrate promising early clinical outcomes.AIM To retrospectively analyze distal radius fractures treated using the 3-point positioning-assisted MIPO technique with preservation of the PQ.METHODS The 3-point positioning technique was applied:The Kirschner wire was inserted after fluoroscopy and was correctly adjusted the position of the plate above the PQ.With the aid of Kirschner wires positioning the PQ stripping was performed only once,and the plate then placed in a correct and satisfactory position.Operation time,incision length,wrist pain score,upper extremity function disabilities of the arm,shoulder and hand(DASH)score,wrist Gartland-Werley score,wrist grip strength,and range of motion were among the quantitative variables recorded.Qualitative variables including AO fracture classification,intraoperative and postoperative complications were evaluated.RESULTS At a mean follow-up of 6.9±0.8 months,the mean scar length was 25.4±1.5 mm,the pain score was 0.7±0.6,the DASH score for the upper limb was 4.7±1.3,and the Gartland-Werley score for wrist function was 4.1±1.1 at the last follow-up.Mean flexion was 97.3%,extension was 97.0%,pronation was 98.9%,supination was 98.9%,and grip strength was 86.6%compared to contralateral values.No unfavorable intraoperative or postoperative complications occurred.CONCLUSION The 3-point positioning technique may reduce the damage to the PQ muscle and is a safe and effective method for MIPO for distal radius fractures. 展开更多
关键词 distal radius fractures Minimally invasive plate osteosynthesis Pronator quadratus sparing technique 3-point positioning technology
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Comparison of two fixation techniques of olecranon osteotomy after reconstruction of intra-articular distal humerus fractures
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作者 Faaiz Ali Shah Aimal Sattar Javed Iqbal 《World Journal of Orthopedics》 2025年第12期103-111,共9页
BACKGROUND Accurate surgical fixation of intra-articular distal humerus fractures require olecranon osteotomy.Repair of osteotomy is achieved with a variety of techniques but no consensus has been achieved regarding t... BACKGROUND Accurate surgical fixation of intra-articular distal humerus fractures require olecranon osteotomy.Repair of osteotomy is achieved with a variety of techniques but no consensus has been achieved regarding the optimum technique for fixing the olecranon osteotomy.In this retrospective study,we compared the functional and radiological outcome of the two commonly used techniques of fixing olecranon osteotomy after fixing distal humerus intra-articular fractures.We hypothesized that olecranon osteotomy fixed with 6.5 mm cancellous intramedullary screw alone yielded better radiological and functional outcome than fixation with cerclage wire over cancellous screw applied in figure of eight as tension band wiring(TBW).AIM To determine the radiological and functional outcome of olecranon osteotomy fixation with cancellous screw alone vs cancellous screw combined with cerclage wiring applied as TBW.METHODS This retrospective study was conducted in Lady Reading Hospital Peshawar Pakistan.Intra-articular distal humerus fractures fulfilling the inclusion criteria and operated during 2023 to 2025 were included.Olecranon osteotomy fixation with 6.5 mm cancellous screw alone was labelled as group A while cerclage wire over cancellous screw in figure of eight as TBW were labelled as group B.The demographics,radiological and functional outcome in both groups were compared at one year using Mayo Elbow Performance Score and Quick Disabilities of the Arm,Shoulder,and Hand Score.RESULTS We included 32 patients in this study.The mean age of group A patients was 34±5.5 years while group B had a mean age of 34±6.2 years.Radiological union of olecranon osteotomy was achieved in all cases in both groups.Functional outcome however was significantly better in group A than in group B(P<0.05).The Mayo Elbow Performance Score was excellent in 14(87.5%)and good in 2(12.5%)patients in group A while 7(43.47%)patients had excellent outcome,5(31.25%)good and 4(25%)had fair outcome in group B.The mean Quick Disabilities of the Arm,Shoulder,and Hand Score was 24.5±2.1 and 78.1±12.1 in group A and B respectively(P<0.05).CONCLUSION Similar radiological union was achieved in all patients of olecranon osteotomy treated with intramedullary screw alone and intramedullary screw with TBW.Functional outcome however was significantly better in intramedullary screw alone than in intramedullary screw with TBW. 展开更多
关键词 Intra-articular distal humerus fractures Olecranon osteotomy Mayo Elbow Performance Score Tension band wiring Quick Disabilities of the Arm Shoulder and Hand
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3D全腹腔镜根治术治疗Ⅲ期远端胃癌的疗效及安全性
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作者 于浩 晏云翔 +6 位作者 潘晓强 成福坤 李光云 许建国 季恩敏 彭杰 黄宝玉 《郑州大学学报(医学版)》 北大核心 2026年第1期148-152,共5页
目的:探究3D全腹腔镜根治术治疗Ⅲ期远端胃癌的疗效及安全性。方法:收集2021年2月至2024年2月收治的Ⅲ期远端胃癌患者的临床资料。将接受腹腔镜辅助远端胃癌根治术的患者纳入对照组,将接受3D全腹腔镜辅助远端胃癌根治术的患者纳入观察组... 目的:探究3D全腹腔镜根治术治疗Ⅲ期远端胃癌的疗效及安全性。方法:收集2021年2月至2024年2月收治的Ⅲ期远端胃癌患者的临床资料。将接受腹腔镜辅助远端胃癌根治术的患者纳入对照组,将接受3D全腹腔镜辅助远端胃癌根治术的患者纳入观察组,采用倾向性评分匹配法以最邻近匹配原则1∶1进行匹配,最终两组各纳入60例。比较两组手术情况、术后恢复情况、术后疼痛程度评分(VAS)、围手术期应激反应指标、胃肠功能指标及并发症发生情况。结果:与对照组相比,观察组切口长度、消化道重建时间、术后首次排气时间、自主下床活动时间及住院时间更短,使用镇痛药物患者比例更低,切口美容评分更高,术后并发症发生率更低(P<0.05)。术后8、24、48、72 h两组VAS均低于治疗前,且观察组低于对照组(P<0.05)。观察组术后24、72 h ACTH、PGE2升高幅度和MTL、GAS降低幅度均小于对照组(P<0.05)。结论:3D全腹腔镜根治术治疗Ⅲ期远端胃癌创伤小、术后并发症少,有利于胃肠功能早期恢复,且具有切口美观的优势。 展开更多
关键词 远端胃癌 3D全腹腔镜 胃肠功能
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选择性结扎脾动脉与Kimura法在腹腔镜保留脾脏的胰体尾切除术中的应用比较
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作者 王帅 张栋栋 +5 位作者 李冬瑞 张腾飞 武海波 刘建华 吕海涛 李秋生 《中华肝胆外科杂志》 北大核心 2026年第1期44-48,共5页
目的比较选择性结扎脾动脉与Kimura法在腹腔镜保留脾脏的胰体尾切除术中的应用效果。方法回顾性分析2022年6月至2024年6月河北医科大学第二医院肝胆外科行腹腔镜保留脾脏的胰体尾切除术的61例患者资料,其中男性32例,女性29例,年龄54.0(4... 目的比较选择性结扎脾动脉与Kimura法在腹腔镜保留脾脏的胰体尾切除术中的应用效果。方法回顾性分析2022年6月至2024年6月河北医科大学第二医院肝胆外科行腹腔镜保留脾脏的胰体尾切除术的61例患者资料,其中男性32例,女性29例,年龄54.0(43.0,64.0)岁。61例患者中胰腺神经内分泌肿瘤19例(31.1%),胰腺浆液性囊腺瘤13例(21.3%),胰腺实性假乳头状瘤10例(16.4%),胰腺导管内乳头状黏液性肿瘤10例(16.4%),胰腺黏液性囊性肿瘤9例(14.8%)。根据术中脾血管处理方式不同将所有患者分为:试验组(n=27),在Kimura法基础上,保留脾静脉回流,选择性结扎脾动脉,结扎但不离断;对照组(n=34)术中完整保留脾动脉与脾静脉即Kimura法。比较两组手术时间、术中出血量、保留脾脏成功率、术后出血、术后胰瘘、术后住院时间,门诊复查随访术后12个月血小板计数以及CT检查的脾梗死情况。结果试验组手术时间短于对照组[140.0(115.0,180.0)min比180.0(160.0,232.5)min],术中出血量少于对照组[100.0(20.0,200.0)ml比300.0(100.0,500.0)ml],差异均有统计学意义(Z=-3.95,P<0.001;Z=-2.46,P=0.014)。试验组保留脾脏成功率略高于对照组[100%(27/27)比85.3%(29/34)],但差异无统计学意义(P=0.060)。两组术后出血、术后胰瘘、术后住院时间等比较,差异均无统计学意义(均P>0.05)。试验组术后12个月脾梗死有2例(7.4%)、血小板计数为(260.3±81.7)×109/L,对照组脾梗死有2例(5.9%)、血小板计数为(237.7±57.3)×109/L,两组比较差异均无统计学意义(均P>0.05)。结论选择性结扎脾动脉对Kimura法进行改良,应用于腹腔镜保留脾脏的胰体尾切除术中,在缩短手术时间、减少术中出血方面优于Kimura法。 展开更多
关键词 胰腺肿瘤 腹腔镜保留脾脏的胰体尾切除术 脾动脉结扎
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正畸上颌牙列远中移动的三维有限元分析
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作者 谢丽丽 张昊 寻春雷 《中国组织工程研究》 北大核心 2026年第14期3557-3567,共11页
背景:上颌牙列远中移动是临床常用的非拔牙矫治策略,但临床实现效率低,传统方式易产生支抗丢失和磨牙往复移动,因此,国内外学者不断探索新的治疗途径,并应用有限元分析研究远中移动的力学机制。目的:建立上颌复合体及矫治器三维有限元模... 背景:上颌牙列远中移动是临床常用的非拔牙矫治策略,但临床实现效率低,传统方式易产生支抗丢失和磨牙往复移动,因此,国内外学者不断探索新的治疗途径,并应用有限元分析研究远中移动的力学机制。目的:建立上颌复合体及矫治器三维有限元模型,对比两种远中移动上颌牙列方式的牙齿初始位移和牙周膜应力变化。方法:选择个别正常牙合成人志愿者1例,拍摄颌面部锥形束CT图片,据此建立上颌骨-上牙列-牙周膜-弓丝-托槽-牵引钩-微种植体支抗钉的三维有限元模型,在此模型基础上设置2组加载模式,分别为A组(整体远移2 N组)、B组(推簧分步远移2 N组),每个组别中分别设置3,5,7 mm的牵引钩高度,即A1、A2、A3、B1、B2、B3共6组工况。其中A组模型(A1、A2、A3)模拟支抗钉整体远移方式,B组模型(B1、B2、B3)模拟支抗钉-推簧分步远移方式,A组、B组中微种植体支抗钉颈部加载力值均为2 N,在有限元软件中分析计算牙齿水平向、矢状向和垂直向的初始位移变化以及牙周膜应力分布。结果与结论:①两组加载方式均实现了上颌牙列的远中移动,但移动量和效率不同。在牵引钩高度相同情况下,与A组整体远移的加载方式相比,B组推簧分步远移的加载方式使磨牙实现了更大的远中移动量。在整体远移时,磨牙远中倾斜移动,当牵引钩高度为5 mm时位移量最大;在推簧分步远移时,磨牙呈整体远中移动趋势,当牵引钩高度为7 mm时位移量最大,但切牙有唇倾趋势。在牵引钩高度相同条件下,B组磨牙远移量均高于A组,B2组牙周膜范式等效应力值最大,为31 kPa。②应用微种植体支抗辅助整体远移上颌牙列时,在5 mm牵引钩高度时远移效率表达最高;应用微种植体支抗-推簧分步远移上颌牙列时,在7 mm牵引钩高度时远移效率表达最高;在不同牵引钩高度下,构建的颊侧微种植体-推簧-牵引钩系统均较整体远移方式的效率更高,磨牙倾向整体远移。 展开更多
关键词 上颌牙列 远中移动 微种植体支抗 三维有限元分析 生物力学研究 牙周膜
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以副肾动脉为超声表现Jacobsen综合征的产前诊断
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作者 满婷婷 欧德明 +2 位作者 杨海鑫 杨璞 董兴盛 《中国实用医药》 2026年第2期90-93,共4页
目的产前诊断1例因无创产前检测(NIPT)提示11q24.2-q25缺失高风险的Jacobsen综合征,结合产前、产后发现探讨其表型与分子特征。方法应用染色体G显带核型、染色体微阵列分析(CMA)产前诊断1例无创产前检测结果为11q24.2-q25缺失高风险的Ja... 目的产前诊断1例因无创产前检测(NIPT)提示11q24.2-q25缺失高风险的Jacobsen综合征,结合产前、产后发现探讨其表型与分子特征。方法应用染色体G显带核型、染色体微阵列分析(CMA)产前诊断1例无创产前检测结果为11q24.2-q25缺失高风险的Jacobsen综合征胎儿。通过父母外周血G显带核型、CMA检测明确胎儿染色体异常是否为新发,收集产前超声结果和产后表型,分析其特征。结果通过抽取羊水查G显带核型、CMA,诊断胎儿为11号染色体11q24.2-qter缺失,片段大小约7.8 Mb,该缺失区域包含了FLI1、ETS1等基因。经胎儿父母外周血染色体核型及CMA,确定为新发变异。孕期三级超声见腹主动脉发出2条分支进入左肾,疑似胎儿左肾副肾动脉,脐带血血常规显示血小板计数减少,但引产后见胎儿外观有鼻梁宽平、左足重叠趾。结论Jacobsen综合征的临床表型存在明显的异质性,并具有隐匿性。本病例为首次报告以胎儿副肾动脉为产前超声表现的Jacobsen综合征,扩展了Jacobsen综合征的产前超声征象。当产前超声发现副肾动脉时,需详细扫查胎儿各个系统。若伴有其他异常,孕妇需行介入性产前诊断,并完善CMA检查,以明确是否存在染色体微缺失/微重复。 展开更多
关键词 Jacobsen综合征 11q远端缺失 产前诊断 副肾动脉 染色体微阵列分析
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