BACKGROUND Sacrococcygeal hernia is a very rare condition that is usually secondary to sacrococcygectomy, and its ideal treatment regimen is unclear. Herein, we report a case of sacrococcygeal hernia occurring in a pa...BACKGROUND Sacrococcygeal hernia is a very rare condition that is usually secondary to sacrococcygectomy, and its ideal treatment regimen is unclear. Herein, we report a case of sacrococcygeal hernia occurring in a patient who had no history of sacrococcygeal operation, present the operative procedures of mesh repair via a combined laparoscopic and sacrococcygeal approach that has not been described,and discuss our experience in diagnosis and treatment with a review of the literature.CASE SUMMARY A 54-year-old woman who chiefly complained of a 10-year history of a reversible bulge in her right sacrococcygeal region was admitted to our hospital. The physical examination revealed a bulge in the right sacrococcygeal region upon standing, which disappeared in the prone position but relapsed when performing the Valsalva manoeuvre. Computed tomography displayed an abnormality in the structure of the tissues between the midline of the sacrococcygeal region and the right gluteus muscle. The patient was diagnosed with sacrococcygeal hernia and received hernia repair with mesh through a combined laparoscopic and sacrococcygeal approach. On laparoscopy, the rectum was dissected posterolaterally, and a defect was identified in the right anterior sacrococcygeal region through which part of the rectum protruded. This was followed by the placement of a self-gripping polyester mesh via a sacrococcygeal approach. There were no postoperative complications. The patient was discharged on postoperative day 7 and was followed for more than 6 mo with no recurrence.CONCLUSION Laparoscopic mesh repair is recommended as a priority of surgical options for sacrococcygeal hernias, while choosing a self-gripping mesh can help avoid the risk of presacral vessel injury by reducing suture fixation.展开更多
Based on a case study of TESOL approaches applied in several Australian institutions,this paper gives critical analysis of the approaches by comparing them with the one encountered in the situation in which the author...Based on a case study of TESOL approaches applied in several Australian institutions,this paper gives critical analysis of the approaches by comparing them with the one encountered in the situation in which the author has been working.A further implication of those approaches is also examined.展开更多
BACKGROUND Aortic stenosis is one of the rare valvular complications in a transplanted heart.Over the past 8 years,transcatheter approach for aortic valve replacement(TAVR)has been slowly evolving to be the preferred ...BACKGROUND Aortic stenosis is one of the rare valvular complications in a transplanted heart.Over the past 8 years,transcatheter approach for aortic valve replacement(TAVR)has been slowly evolving to be the preferred approach in these patient population when compared to the surgical approach.We report a second case in the United States with successful transfemoral minimal approach with minimal sedation for TAVR in a heart transplant recipient 19 years post transplantation for severe symptomatic calcified aortic stenosis.CASE SUMMARY We present a case of 73-year-old male who has undergone successful minimal approach transcatheter aortic valve replacement in an allograft heart.Patient had received orthotopic heart transplantation 19 years ago for non-ischemic cardiomyopathy.Follow up transthoracic echocardiograms as per routine protocol did not show any aortic valve disease until 15 years post transplantation.Aortic valve was noted to be mildly sclerotic at that time and gradually progressed to severe symptomatic aortic stenosis over the next 4 years.Patient had complaints of worsening shortness of breath that limited his functional capacity.Overall his post heart transplantation period has been mostly uneventful except for allograft non occlusive vasculopathy and aortic stenosis.His Society of Thoracic Surgery risk score was 12.205%and he was considered to be a high-risk surgical candidate by surgeon.Decision was made to undergo transcatheter aortic valve replacement.CONCLUSION With the improved survival of these patients,we think it is time to look intopathophysiology of valvular disease in transplant heart recipients.Some other unanswered questions include,underlying donor and recipient risk factors for valvular diseases in heart transplant recipients.展开更多
BACKGROUND Desmoid tumors(DT) are locally advanced but histologically benign monoclonal neoplasms that can occur from any musculoaponeurotic structure. The aim of this report is to analyze a rare clinical case of an a...BACKGROUND Desmoid tumors(DT) are locally advanced but histologically benign monoclonal neoplasms that can occur from any musculoaponeurotic structure. The aim of this report is to analyze a rare clinical case of an aggressive intra-abdominal DT successfully treated with sorafenib.CASE SUMMARY A 36-year-old man presented with increasing colicky abdominal pain and a selfpalpable mass in his left abdomen. Fourteen years earlier he was diagnosed with a large intra-abdominal tumor, which adhered to the left colonic flexure, part of the major gastric curvature and the spleen. Subsequent exploratory laparotomy revealed a voluminous mass in the epigastrium, arising from the posterior surface of the stomach and invading the superior mesenteric vessels, transverse mesocolon and the small bowel mesentery. As the tumor was unresectable, a jejunojejunal bypass was performed. Traditional therapeutic interventions proved insufficient, and the patient was started on sorafenib with a subsequent fulldisease response.CONCLUSIONDT's pathogenesis has been associated with mutations in the adenomatous polyposis coli(APC) gene or beta-catenin gene CTNNB1, sex steroids or previous surgical trauma. Local treatment modalities, such as surgery or radiotherapy, are implemented in aggressively progressing or symptomatic patients. Sorafenib is a hopeful therapeutic option against DTs, while several pharmacological agents have been successfully used.展开更多
BACKGROUND As the population ages and people’s living standards gradually improve,the incidence of cerebrovascular disease in China is increasing annually,posing a serious threat to people’s health.The incidence of ...BACKGROUND As the population ages and people’s living standards gradually improve,the incidence of cerebrovascular disease in China is increasing annually,posing a serious threat to people’s health.The incidence of brachiocephalic artery stenosis in ischemic cerebrovascular disease is relatively low,accounting for 0.5% to 2% of patients,but its consequences are very serious.Herein,we report a case of brachiocephalic artery stenting through the carotid artery.CASE SUMMARY The patient was a 66-year-old man.He came to our hospital because of repeated dizziness and was diagnosed with ischemic cerebrovascular disease (stenosis at the beginning of the brachiocephalic artery).Cerebral angiography suggested that the stenosis of the brachiocephalic artery had almost occluded it.Contrast agent threaded a line through the stenosis,and there was reversed blood flow through the right vertebral artery to compensate for the subclavian steal syndrome in the right subclavian artery.To improve the symptoms,we placed an Express LD (8 mm × 37 mm) balloon expanding stent in the stenosis section.After the operation,the patient’s dizziness significantly improved.However,after 6 mo,the patient was re-admitted to the hospital due to dizziness.A computed tomography scan of the head revealed multiple cerebral infarctions in bilateral basal ganglia and the right lateral ventricle.An auxiliary examination including computerized tomography angiography of the vessels of the head and cerebral angiography both showed severe stenosis in the brachiocephalic artery stent.During the operation,the guidewire and catheter were matched to reach the opening of the brachiocephalic artery.Therefore,we decided to use a right carotid artery approach to complete the operation.We sutured the neck puncture point with a vascular stapler and then ended the operation.After the operation,the patient recovered well,his symptoms related to dizziness disappeared,and his right radial artery pulsation could be detected.CONCLUSION In patients with brachial artery stenosis,when the femoral artery approach is difficult,the carotid artery is an unconventional but safe and effective approach.At the same time,the use of vascular suturing devices to suture a carotid puncture point is also commendable.Although it is beyond the published scope of the application,when used cautiously,it can effectively avoid cerebral ischemia caused by prolonged artificial compression,and improper suturing can lead to stenosis of the puncture site and improper blood pressure,resulting in the formation of a hematoma.Finally,satisfactory hemostasis can be achieved.展开更多
The paper studies on case-based reasoning of uncertain product attributes in configuration design of a product family. Interval numbers characterize uncertain product attributes. By interpolating a number of certain v...The paper studies on case-based reasoning of uncertain product attributes in configuration design of a product family. Interval numbers characterize uncertain product attributes. By interpolating a number of certain values randomly to replace interval numbers and making projection pursuit analysis on source cases and target cases of expanded numbers, we can get a projection value in the optimal projection direction. Based on projection value, we can construct a case retrieval model of projection pursuit that can handle coexisting certain and uncertain product attributes. The application examples of chainsaw configuration design show that case retrieval is highly sensitive to reliable results.展开更多
BACKGROUND Intraabdominal adhesions develop spontaneously or after an inflammatory process or surgical procedure in the abdomen.They are the most common cause of small bowel obstruction(SBO).SBO occasionally leads to ...BACKGROUND Intraabdominal adhesions develop spontaneously or after an inflammatory process or surgical procedure in the abdomen.They are the most common cause of small bowel obstruction(SBO).SBO occasionally leads to intestinal ischemia(In Is)which can be a life-threatening condition that requires management as soon as possible.We herein report a case of SBO with In Is presented in our institution and treated without intestinal resection.CASE SUMMARY A 34-year-old man presented at the emergency department after a 12-h-onset diffuse abdominal pain,bloating and nausea.He had a history of traumatic right hepatectomy 11 years ago as well as adhesiolysis and resection of a long part of small bowel 2 years ago.An abdominal computed tomography(CT)showed dilated loops that led to the diagnosis of SBO.Due to deteriorating lactic acidosis,the patient was operated.Torsion of the small bowel around an adhesion led to2.30 m of ischemic ileum.After the application of N/S 40°C for 20 min,the intestine showed signs of improvement and it was decided to avoid resection and instead temporary close the abdomen with vacuum-pack technique.At the second-look laparotomy 48 h later,the intestine appeared normal.The patient was discharged on the 8 th post-op day in excellent condition.CONCLUSION In case of SBO caused by adhesions,extreme caution is needed if In Is is present,as the clinical signs are mild and you should rely for diagnosis in CT findings and lactate levels.Conservative surgical approach could reverse the effects of In Is,if performed quickly,so that intestinal resection is avoided and should be used even when minimum signs of viability are present.展开更多
文摘BACKGROUND Sacrococcygeal hernia is a very rare condition that is usually secondary to sacrococcygectomy, and its ideal treatment regimen is unclear. Herein, we report a case of sacrococcygeal hernia occurring in a patient who had no history of sacrococcygeal operation, present the operative procedures of mesh repair via a combined laparoscopic and sacrococcygeal approach that has not been described,and discuss our experience in diagnosis and treatment with a review of the literature.CASE SUMMARY A 54-year-old woman who chiefly complained of a 10-year history of a reversible bulge in her right sacrococcygeal region was admitted to our hospital. The physical examination revealed a bulge in the right sacrococcygeal region upon standing, which disappeared in the prone position but relapsed when performing the Valsalva manoeuvre. Computed tomography displayed an abnormality in the structure of the tissues between the midline of the sacrococcygeal region and the right gluteus muscle. The patient was diagnosed with sacrococcygeal hernia and received hernia repair with mesh through a combined laparoscopic and sacrococcygeal approach. On laparoscopy, the rectum was dissected posterolaterally, and a defect was identified in the right anterior sacrococcygeal region through which part of the rectum protruded. This was followed by the placement of a self-gripping polyester mesh via a sacrococcygeal approach. There were no postoperative complications. The patient was discharged on postoperative day 7 and was followed for more than 6 mo with no recurrence.CONCLUSION Laparoscopic mesh repair is recommended as a priority of surgical options for sacrococcygeal hernias, while choosing a self-gripping mesh can help avoid the risk of presacral vessel injury by reducing suture fixation.
文摘Based on a case study of TESOL approaches applied in several Australian institutions,this paper gives critical analysis of the approaches by comparing them with the one encountered in the situation in which the author has been working.A further implication of those approaches is also examined.
文摘BACKGROUND Aortic stenosis is one of the rare valvular complications in a transplanted heart.Over the past 8 years,transcatheter approach for aortic valve replacement(TAVR)has been slowly evolving to be the preferred approach in these patient population when compared to the surgical approach.We report a second case in the United States with successful transfemoral minimal approach with minimal sedation for TAVR in a heart transplant recipient 19 years post transplantation for severe symptomatic calcified aortic stenosis.CASE SUMMARY We present a case of 73-year-old male who has undergone successful minimal approach transcatheter aortic valve replacement in an allograft heart.Patient had received orthotopic heart transplantation 19 years ago for non-ischemic cardiomyopathy.Follow up transthoracic echocardiograms as per routine protocol did not show any aortic valve disease until 15 years post transplantation.Aortic valve was noted to be mildly sclerotic at that time and gradually progressed to severe symptomatic aortic stenosis over the next 4 years.Patient had complaints of worsening shortness of breath that limited his functional capacity.Overall his post heart transplantation period has been mostly uneventful except for allograft non occlusive vasculopathy and aortic stenosis.His Society of Thoracic Surgery risk score was 12.205%and he was considered to be a high-risk surgical candidate by surgeon.Decision was made to undergo transcatheter aortic valve replacement.CONCLUSION With the improved survival of these patients,we think it is time to look intopathophysiology of valvular disease in transplant heart recipients.Some other unanswered questions include,underlying donor and recipient risk factors for valvular diseases in heart transplant recipients.
文摘BACKGROUND Desmoid tumors(DT) are locally advanced but histologically benign monoclonal neoplasms that can occur from any musculoaponeurotic structure. The aim of this report is to analyze a rare clinical case of an aggressive intra-abdominal DT successfully treated with sorafenib.CASE SUMMARY A 36-year-old man presented with increasing colicky abdominal pain and a selfpalpable mass in his left abdomen. Fourteen years earlier he was diagnosed with a large intra-abdominal tumor, which adhered to the left colonic flexure, part of the major gastric curvature and the spleen. Subsequent exploratory laparotomy revealed a voluminous mass in the epigastrium, arising from the posterior surface of the stomach and invading the superior mesenteric vessels, transverse mesocolon and the small bowel mesentery. As the tumor was unresectable, a jejunojejunal bypass was performed. Traditional therapeutic interventions proved insufficient, and the patient was started on sorafenib with a subsequent fulldisease response.CONCLUSIONDT's pathogenesis has been associated with mutations in the adenomatous polyposis coli(APC) gene or beta-catenin gene CTNNB1, sex steroids or previous surgical trauma. Local treatment modalities, such as surgery or radiotherapy, are implemented in aggressively progressing or symptomatic patients. Sorafenib is a hopeful therapeutic option against DTs, while several pharmacological agents have been successfully used.
文摘BACKGROUND As the population ages and people’s living standards gradually improve,the incidence of cerebrovascular disease in China is increasing annually,posing a serious threat to people’s health.The incidence of brachiocephalic artery stenosis in ischemic cerebrovascular disease is relatively low,accounting for 0.5% to 2% of patients,but its consequences are very serious.Herein,we report a case of brachiocephalic artery stenting through the carotid artery.CASE SUMMARY The patient was a 66-year-old man.He came to our hospital because of repeated dizziness and was diagnosed with ischemic cerebrovascular disease (stenosis at the beginning of the brachiocephalic artery).Cerebral angiography suggested that the stenosis of the brachiocephalic artery had almost occluded it.Contrast agent threaded a line through the stenosis,and there was reversed blood flow through the right vertebral artery to compensate for the subclavian steal syndrome in the right subclavian artery.To improve the symptoms,we placed an Express LD (8 mm × 37 mm) balloon expanding stent in the stenosis section.After the operation,the patient’s dizziness significantly improved.However,after 6 mo,the patient was re-admitted to the hospital due to dizziness.A computed tomography scan of the head revealed multiple cerebral infarctions in bilateral basal ganglia and the right lateral ventricle.An auxiliary examination including computerized tomography angiography of the vessels of the head and cerebral angiography both showed severe stenosis in the brachiocephalic artery stent.During the operation,the guidewire and catheter were matched to reach the opening of the brachiocephalic artery.Therefore,we decided to use a right carotid artery approach to complete the operation.We sutured the neck puncture point with a vascular stapler and then ended the operation.After the operation,the patient recovered well,his symptoms related to dizziness disappeared,and his right radial artery pulsation could be detected.CONCLUSION In patients with brachial artery stenosis,when the femoral artery approach is difficult,the carotid artery is an unconventional but safe and effective approach.At the same time,the use of vascular suturing devices to suture a carotid puncture point is also commendable.Although it is beyond the published scope of the application,when used cautiously,it can effectively avoid cerebral ischemia caused by prolonged artificial compression,and improper suturing can lead to stenosis of the puncture site and improper blood pressure,resulting in the formation of a hematoma.Finally,satisfactory hemostasis can be achieved.
文摘The paper studies on case-based reasoning of uncertain product attributes in configuration design of a product family. Interval numbers characterize uncertain product attributes. By interpolating a number of certain values randomly to replace interval numbers and making projection pursuit analysis on source cases and target cases of expanded numbers, we can get a projection value in the optimal projection direction. Based on projection value, we can construct a case retrieval model of projection pursuit that can handle coexisting certain and uncertain product attributes. The application examples of chainsaw configuration design show that case retrieval is highly sensitive to reliable results.
文摘BACKGROUND Intraabdominal adhesions develop spontaneously or after an inflammatory process or surgical procedure in the abdomen.They are the most common cause of small bowel obstruction(SBO).SBO occasionally leads to intestinal ischemia(In Is)which can be a life-threatening condition that requires management as soon as possible.We herein report a case of SBO with In Is presented in our institution and treated without intestinal resection.CASE SUMMARY A 34-year-old man presented at the emergency department after a 12-h-onset diffuse abdominal pain,bloating and nausea.He had a history of traumatic right hepatectomy 11 years ago as well as adhesiolysis and resection of a long part of small bowel 2 years ago.An abdominal computed tomography(CT)showed dilated loops that led to the diagnosis of SBO.Due to deteriorating lactic acidosis,the patient was operated.Torsion of the small bowel around an adhesion led to2.30 m of ischemic ileum.After the application of N/S 40°C for 20 min,the intestine showed signs of improvement and it was decided to avoid resection and instead temporary close the abdomen with vacuum-pack technique.At the second-look laparotomy 48 h later,the intestine appeared normal.The patient was discharged on the 8 th post-op day in excellent condition.CONCLUSION In case of SBO caused by adhesions,extreme caution is needed if In Is is present,as the clinical signs are mild and you should rely for diagnosis in CT findings and lactate levels.Conservative surgical approach could reverse the effects of In Is,if performed quickly,so that intestinal resection is avoided and should be used even when minimum signs of viability are present.
