title: [Clear Cell Variant of Invasive Urothelial Carcinoma of the Ureter : A Case Report].
abstract: Clear cell variant of invasive urothelial carcinoma is an extremely rare tumor. Here, we report a case of clear cell variant of invasive urothelial carcinoma of the ureter. A 59-year-old man, who complained of gross hematuria was referred to our hospital for precise examination and treatment. Computerized tomographic scanning confirmed the presence of a tumor in the right lower ureter. Urine cytology was positive. He had undergone retroperitoneoscopy-assisted right radical nephroureterectomy. Typical urothelial carcinoma with partial clear cell appearance made it difficult to make a precise pathological diagnosis and immunohistochemical stain helped to diagnosis the case as clear cell variant of invasive urothelial carcinoma. To our knowledge this is the first case of clear cell variant of invasive urothelial carcinoma of the ureter in the world.
authors.affiliation: The Department of Urology, JA Onomichi General Hospital.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Moriyama
authors.affiliation: The Department of Pathology, JA Onomichi General Hospital.
authors.forename: Shuji
authors.initials: S
authors.lastname: Yonehara
authors.affiliation: The Department of Urology, JA Onomichi General Hospital.
authors.forename: Tateki
authors.initials: T
authors.lastname: Yoshino
mesh_terms: D006417:Hematuria / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed; D014516:Ureteral Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery