摘要
目的：研究肝脏肺吸虫病变的ＭＲＩ、ＣＴ和超声（ＵＳ）检查的影像特征及其病理组织学基础。材料与方法：回顾性分析了经病理证实的７例直径３ｃｍ以下肝脏肺吸虫病变的ＭＲＩ、ＣＴ和ＵＳ征象，并与病理结果进行了对照研究。结果：７例均为单发病变。ＵＳ均表现为低回声，彩色多普勒示病变内未见血流频谱；ＣＴ上６例呈低密度，１例为等密度，注射造影剂后病变内大部分无强化，周边轻度强化；ＭＲＩ上４例呈稍长Ｔ１、稍短Ｔ２信号，３例呈稍长Ｔ１、等和稍长Ｔ２信号；５例注射Ｇｄ－ＤＴＰＡ，病变周边均可见轻或中度强化，病变内大部分无强化。大体标本上病变呈边界清楚的灰黄或灰白色结节，４例呈多结节融合状，有部分或完整的纤维包裹；大体和组织切片示：病变内有含凝固坏死物的多房性小囊腔或穴道形成及较多的夏科雷登结晶和嗜酸粒细胞。结论：稍短Ｔ２信号是肝脏肺吸虫病变的重要征象。稍短Ｔ２信号的病理基础为凝固坏死。凝固坏死多呈稍长Ｔ１、稍短Ｔ２信号，也可呈稍长Ｔ１、稍长Ｔ２信号。
Purpose: To evaluate the features of MRI, CT and US, and the pathologic findings of paragonimiasis of liver. Materials and methods: The features of MRI, CT, and US of 7 paragonimiasis of liver (≤3 cm) proved pathologically were analyzed retrospectively and correlated with pathologic findings. Results: Of 7 lesions, 4 were found to have slightly long T1、short T2; 3 had long T2 signal intensity with mild or moderate enhancement of the periphery part. On CT, 6 were hypodense and 1 isodense, the enhancement pattern was similar to that of MRI. On US, 7 were hypoechoic nodules and there was no arterial or venous flow within the lesions. The pathologic findings: coagulative necrosis was found in 4 cases with slightly long T1, short T2 and coagulative necrosis was also present in 3 patients with sligtely long T1, long T2. Conclusion: Short T2 signal intensity was an important sign for paragonimiasis of liver. The pathologic basis of short T2 was coagulative necrosis.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
1997年第12期822-824,共3页
Chinese Journal of Radiology
关键词
并殖吸虫病
肝脏
NMR
成像
Liver diseases, parasitic Magnetic resonance imaging Tomography, X-ray computed Ultrasonography
