title: Multicystic urothelial carcinoma of the bladder with gland-like lumina and with signet-ring cells. A case report.
abstract: We present the case of 80-year-old male with superficial papillary urothelial carcinoma of the urinary bladder with striking multicystic architecture with a combination of features of urothelial carcinoma with gland-like lumina, with signet-ring cell differentiation and microcystic pattern. However, the tumor shared the morphologic features of several variants of urothelial carcinoma, the most important differential diagnosis covered so-called florid Brunneriosis, cystitis cystica, and primary adenocarcinomas of the urinary bladder.
authors.affiliation: Department of Pathology, Mexican Oncology Hospital, Instituto Mexicano del Seguro Social, Mexico City, Mexico. isa98@prodigy.net.mx
authors.forename: Isabel
authors.initials: I
authors.lastname: Alvarado-Cabrero
authors.forename: Delia
authors.initials: D
authors.lastname: Pérez-Montiel
authors.forename: Ondrej
authors.initials: O
authors.lastname: Hes