title: Renal cell carcinoma presenting as a single large cyst.
abstract: A large single renal cyst occurring in a 56-year-old man was found to be a cystic renal cell carcinoma on surgical exploration. Various diagnostic tests preoperatively did not reveal the true nature of the cyst.
mesh_terms: D002292:Carcinoma, Renal Cell / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed