单侧输尿管梗阻的CT诊断价值

The Diagnostic Value of CT for Unilateral Ureteral Obstruction

本文报道经证实的单侧输尿管梗阻３１例，其中肿瘤、息肉１０例，结石１４例，狭窄７例。典型ＣＴ表现：肿瘤息肉为梗阻远端输尿管腔内圆形、椭圆形软组织密度灶，密度均匀或不均匀，结石为梗阻远端输尿管腔内圆形、椭圆形及不规则高密度影，ＣＴ值１８４～１０８６ＨＵ；单纯性狭窄为梗阻远端输尿管壁的均匀性增厚及逐渐狭窄改变。ＣＴ定位诊断率为９３．５％，定性诊断率为８０．６％。结合分析对比传统Ｘ线检查结果，着重探讨ＣＴ对单侧输尿管梗阻诊断的价值。

Thirty-one cases of unilateral ureteral obstruction including 10 cases of tumor or polyp, 14 cases of ureterolithes, and 7 cases of stenosis were reported. The typical CT features of tumor or polyp are intraluminal spherical of oval soft-tissue density lesions, which may homogeneous or inhomogeneous. It is intraluminal spherical, oval or irregular high density lesions for ureterolithes, the attenuation varies from 184￣ 1086HU. In simple stenosis the wall of obstructive distal ureter were thickened evently and the lumen were narrowed gradually. The accuracy of diagnosis for positioning by CT was 93.5%, and for nature was 80.6%, The diagniostic value of CT for unilateral ureteral obstruction are discussed as compared with conventional exam.