摘要
目的探讨门静脉瘤的影像学表现、发病机制以及各种影像学检查方法在该病诊断中的价值。方法对经CT确诊的5例门静脉瘤的病例资料进行回顾性分析,比较CT、MR和超声检查对本病的诊断价值。结果门静脉瘤的主要影像学表现是门静脉主干或其分支的局限性扩张,好发部位为血管交汇处,可伴有其它血管畸形。5例中肝内型3例、肝外型2例。2例合并有肝硬化,其中1例伴有门静脉高压和肝动脉-门静脉瘘,另1例伴有原发性肝癌(HCC);3例无肝硬化征象者,1例伴有门静脉双干畸形,1例伴有脾肿大但无肝硬化门静脉高压表现,1例未发现其它伴发病变。结论超声、CT和MRI均可对本病做出定位、定性诊断,MSCTA能提供更为直观地三维图像,因而具有更重要的诊断价值。
Objective：To study the etiology and imaging findings of portal venous aneurysm （PVA） ,and to evaluate the value of various imaging modalities （CT,US, MRI） in the diagnosis of PVA. Methods：The CT findings of PVA were reviewed retrospectively,and the diagnostic value of US, CT and MRI were compared. Results：The main imaging findings of PVA were focal dilatation of the main trunk or branches of portal vein,mostly involving the vascular juncture,and it might be accompanied with other vascular malformation. Of the 5 patients with PVA,there were 3 cases of intra-hepatic type and 2 cases of extra-hepatic type. In 2 patients, PVA were associated with cirrhosis,of which,one patient accompanied with portal hypertension and hepatic arterio-portal fistula, the other one accompanied with hepatocellular carcinoma. No cirrhosis were found in 3 cases,yet one patient accompanied with double portal vein anomaly,one patient accompanied with splenomegaly but without any signs and symptoms of portal hypertension,no abnormality was found in the third patient. Conclusion： Noninvasive diagnosis might be provided by US, CT and MRI. Due to the capability of providing a more direct and 3-dimension image,multi-slice CT angiography plays a very important role in the diagnosis of PVA.
出处
《放射学实践》
2007年第2期171-173,共3页
Radiologic Practice
关键词
磁共振成像
体层摄影术
X线计算机
超声检查
门静脉瘤
Magnetic resonance imaging
Tomography, X- ray computed
Ultrasonography
Portal vein aneurysm
