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目的:总结乳头状肾细胞癌(papillary renal cell carcinoma,PRCC)的动态增强CT表现,并对乳头状肾细胞癌的临床特点和鉴别诊断进行文献复习。方法:回顾性分析7例经病理证实的乳头状肾细胞癌的临床、手术及CT资料。结果:7例均为单发肿块,位于右肾5例,位于左肾2例,CT平扫表现为境界清楚或欠清楚的圆形或椭圆形结节或肿块,病变直径0.8 cm～3.5 cm,平均1.8cm,瘤体小时(≤3 cm)密度较均匀,无囊变和坏死;瘤体较大时(≥3 cm)常出现坏死、囊变。肿瘤强化程度较低,皮髓质期至实质期渐进性轻度增强,排泄期密度略降低。结论:乳头状肾细胞癌的CT表现有一定特征,多呈渐进性轻度强化,与其它类型肾癌不同,可为临床决定手术方式提供依据。
OBJECTIVE: To summarize the dynamic contrast-enhanced CT findings of papillary renal cell carcinoma (PRCC) and review the clinical features and differential diagnosis of papillary renal cell carcinoma. Methods: Retrospective analysis of 7 cases of pathologically confirmed papillary renal cell carcinoma of the clinical, surgical and CT data. Results: All of the 7 cases were single lumps. There were 5 cases located in the right kidney and 2 cases located in the left kidney. CT scan showed a clear or unclear round or oval nodules or mass with a diameter of 0.8 cm to 3.5 cm , Average 1.8cm, tumor density (≤3cm) more uniform density, no cystic degeneration and necrosis; when the tumor is large (≥3cm) often appear necrosis, cystic degeneration. Tumor enhancement is low, mild to progressive enhancement of psoriatic period to pessimistic period, and the density of excretion period is slightly reduced. Conclusion: The CT findings of papillary renal cell carcinoma have some characteristics, mostly progressive mild enhancement, which is different from other types of renal cell carcinoma, which can provide the basis for clinical decision of surgical methods.