title: Tubulocystic renal cell carcinoma disguised as a renal cyst.
abstract: Even though CT scans are considered the gold standard to characterize a renal mass, sometimes they can be misleading, showing a solid renal mass as a cystic one. Tubulocystic renal cell carcinoma (TcRCC) is a rare and recently discovered RCC variant which radiologically may look like a Bosniak type II to IV, even if it has solid features. We describe a case of a patient with left kidney TcRCC initially diagnosed as a renal cyst, who finally underwent radical nephrectomy showing a large, solid neoplasm. Due to its unusual CT appearance, TcRCC can be confused with cystic lesions and several other benign or malignant entities. Ultrasound can be a useful aid for the characterization of these renal tumors.
authors.affiliation: Department of Urology, University of Turin, Città della Salute e della Scienza, Turin, Italy - marco.oderda@libero.it.
authors.forename: Marco
authors.initials: M
authors.lastname: Oderda
authors.forename: Francesca
authors.initials: F
authors.lastname: Maletta
authors.forename: Anna
authors.initials: A
authors.lastname: Palazzetti
authors.forename: Riccardo
authors.initials: R
authors.lastname: Faletti
authors.forename: Marco
authors.initials: M
authors.lastname: Falcone
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Marra
authors.forename: Diego
authors.initials: D
authors.lastname: Galliano
authors.forename: Laura
authors.initials: L
authors.lastname: Davico Bonino
authors.forename: Paolo
authors.initials: P
authors.lastname: Gontero
mesh_terms: D000368:Aged; D002292:Carcinoma, Renal Cell / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000175:diagnosis*; D007680:Kidney Neoplasms / Q000175:diagnosis*; D008297:Male