Incidental Finding of Rare Mucinous Carcinoma of Renal Pelvis in Post Nephrectomy Specimen of Pyonephrotic Non-Functioning Kidney

Primary mucinous adenocarcinoma of renal pelvis is very rare and difficult to diagnose preoperatively due to lack of specific symptoms and radiological findings. We are reporting a case of 52-year old man diagnosed with pyonephrosis with renal stone who bunderwent percutaneous nephrostomy (PCN) initially later on open simple nephrectomy was diagnosed primary mucinous adenocarcinoma of the renal pelvis in histopathology. Post op bserum CEA band CA19.9 blevels were normal. By assessing a literature review we recommend that careful history taking, tumor markers band CT scans may improve the diagnostic accuracy.