ABSTRACT
Most renal carcinomas are thought to originate from the epithelial cells of proximal convoluted tubules in the renal cortex. Collecting duct carcinoma is a recently recognized histological variety of renal cell carcinoma considered to arise from the epithelium of the collecting ducts. It is important to distinguish the collecting duct carcinoma from ordinary renal cell carcinoma, because which has an aggressive clinical course with early metastasis and death. But in patients, the natural course of the disease and its response to treatment have not been clearly established. Herein we report a case of collecting duct carcinoma of kidney in 38-year-old woman who had generalized edema and left flank dull pain. The preoperative diagnosis was left renal cell carcinoma on physical examination and radiologic finding, and left radical nephrectomy was done.