title: A case report of retroaortic left renal vein with tumor thrombus of renal cell carcinoma.
abstract: A 75-year-old woman was referred to our department for evaluation of a left renal tumor. Computed tomography and other imaging studies demonstrated a left renal mass and tumor extension into the left renal vein passing caudally behind the aorta. We clinically diagnosed the tumor as renal cell carcinoma (RCC) associated with a retroaortic left renal vein thrombus, and performed a radical nephrectomy. Pathological examination of the surgical specimen showed a grade 2, clear cell carcinoma with a renal vein thrombus and negative surgical margin. Retroaortic left renal vein is a rare anomaly with a prevalence of 1.8-2.4%. RCC associated with a retroaortic left renal vein thrombus is rarer still. To our knowledge, this is only the third case report to describe an RCC associated with a tumor thrombus in the retroaortic left renal vein.
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan. hideotsuki2004@hotmail.com.
authors.forename: Hideo
authors.initials: H
authors.lastname: Otsuki
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kuroda
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Kosaka
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Ito
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
authors.forename: Masamichi
authors.initials: M
authors.lastname: Hayakawa
authors.affiliation: Department of Urology, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, 359-8513, Japan.
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Asano
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000601:surgery; D000368:Aged; D002292:Carcinoma, Renal Cell / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000601:surgery*; D009392:Nephrectomy / Q000379:methods; D012082:Renal Veins / Q000002:abnormalities*; D013927:Thrombosis / Q000601:surgery*