PRIMARY MUCINOUS CARCINOMA OF THE RENAL PELVIS

A case of primary mucinous carcinoma originating in the renal pelvis a ssociated with renal lithiasis is reported. The left kidney removed wa s mostly occupied by mucinous carcinoma with areas of signet ring cell carcinoma. The epithelium covering the pelvis consisted of a single l ayer of columnar epithelium with scattered goblet cells and mucous gla nds. A series of careful examinations of the abdominal viscera failed to disclose any other primary lesion. The patient died with multiple p eritoneal tumor disseminations eight months after the operation despit e additional chemotherapy.