title: Peripelvic renal pseudocyst due to obstruction.
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D011859:Radiography; D014514:Ureteral Calculi / Q000150:complications*