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Updated: May 20, 2026

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Primary mucinous adenocarcinoma of the renal pelvis and ureter
Sidharth1, P Maskey, P R Chalise
1Urology Unit, Department of Surgery, Tribhuvan University Teaching Hospital, Maharajgunj, Kathmandu, Nepal. Sidd_iom@yahoo.com
Abstract:
Mucinous adenocarcinomas of the renal pelvis and ureter are among the rarest upper urinary tract neoplasm. We report a case of multifocal primary mucinous adenocarcinoma of the renal pelvis and ureter occurring in association with a staghorn calculus and pyonephrosis. A 68 year old man had suffered from right flank pain and upper abdominal swelling for one year. After a series of investigation, a right staghorn stone with pyonephrosis leading to non-functioning kidney was found. Right nephrectomy was performed. The pathological report showed mucinous adenocarcinoma with ureteric margin positive for tumour deposits. Patient was reoperated; right ureterectomy with removal of bladder cuff was done. Although uncommon, the possibility of a tumor should be kept in mind especially in patients with a long standing urolithiasis accompanied by hydronephrosis and/or infection.
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