乳头状肾细胞癌的螺旋CT多期增强扫描诊断价值

The Value of multiphasic spiral computered tomography enhanced scans in diagnosis of papillary renal cell carcinoma

目的探讨螺旋CT多期增强扫描对乳头状肾细胞癌(PRCC)的诊断及鉴别诊断价值。方法回顾性分析26例经手术病理证实的乳头状肾细胞癌的术前螺旋CT多期增强征像,并与手术病理结果对照分析。结果 PRCC的主要CT征象:平扫呈等低密度,增强扫描肿瘤呈较均匀或不均匀轻中度强化,少见液化坏死征象,可有假包膜;肾周间隙受侵征像有结节、条索状影、棘状突起和肾周筋膜增厚。结论螺旋CT多期增强扫描能较好的显示乳头状肾癌的影像特征,与肾透明细胞癌有明显不同,易于鉴别;CT多期增强扫描有助于与部分肾盂癌鉴别。

Aim To diacuss the value of multiphasic spiral computered tomography enhanced scans in diagnosis of papillary renal cell cardinoma （PRCC）. Methods Twenty-six patients with pathologically proved renal PRCC were retrospectively analyzed. All patients were examined with spiral CT in plain and multiphase enhancement scans before operation.CT features of PRCC were compared with surgical and pathological resuhs. Results The features of PRCC on contrast CT was homogeneous or inhomogeneous enhancement from light to moderate. CT features of perinephric space abnormalities included nodus,trabs,spine-like process and thickening of the perirenal fascia. Conclusion Spiral CT could distinctly show imaging characteristics of PRCC and renal pelvic carcinoma.