Fig. 1From: Imaging analysis of 13 rare cases of renal collecting (Bellini) duct carcinoma in northern China: a case series and literature reviewa Case 8: coronal enhanced CT image shows a left kidney collecting ductal carcinoma (CDC). The tumor involves the renal cortex, medulla, and renal pelvis. The boundary is unclear (arrows). b Case 12: coronal unenhanced CT image shows a right kidney mass-type CDC. The tumor compresses the surrounding renal cortex and medulla. The boundary is obvious, and is considered the compressed renal cortex (arrows)Back to article page