title: A case of tubulocystic carcinoma simultaneously occurring with clear cell type renal cell carcinoma and micropapillary urothelial carcinoma of bladder.
abstract: The coexistence of multiple and synchronous primary neoplasms in the genitourinary system has rarely been described in the literature. To our knowledge, this is the first report of a very rare tumor, a "tubulocystic carcinoma," simultaneously occurring with micropapillary urothelial carcinoma in the bladder and clear cell type renal cell carcinoma in the same kidney. Tubulocystic carcinoma is a recently entitled tumor. It had been thought to arise from the distal collecting duct for a period of time and was therefore named as a low-grade collecting duct carcinoma. Microscopically, the tumor is defined as being tubulocystic or having tubulopapillary architecture and a low nuclear grade with hobnail morphology. Its progression and treatment protocol are uncertain.
authors.affiliation: Department of Pathology, Gazi University School of Medicine. dripek@gmail.com
authors.forename: Ipek Işik
authors.initials: II
authors.lastname: Gönül
authors.forename: Asl
authors.initials: A
authors.lastname: Cakr
authors.forename: Sinan
authors.initials: S
authors.lastname: Sözen
authors.forename: Omür
authors.initials: O
authors.lastname: Ataoglu
authors.forename: Turgut
authors.initials: T
authors.lastname: Alkibay
mesh_terms: D002291:Carcinoma, Papillary / Q000473:pathology*; D002292:Carcinoma, Renal Cell / Q000473:pathology*; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D001749:Urinary Bladder Neoplasms / Q000473:pathology*