title: Inflammatory pseudotumor of the urinary bladder: a report of five cases and review of the literature.
abstract: We describe five patients who recently presented with gross hematuria secondary to inflammatory pseudotumors of the bladder along with a review of the literature. At presentation, four of the five patients were clinically misdiagnosed as malignancies of which two were further believed to be leiomyosarcomas on initial histological examination because of their spindle-cell appearance. Conservative excision either by transurethral resection or partial cystectomy was curative in all cases. The main importance of these rare, benign lesions is to differentiate them from malignant tumors for which they may be mistaken, thus avoiding radical surgery and its attendant complications.
authors.affiliation: Division of Urology, Vancouver Hospital, University of British Columbia, Vancouver, BC Canada.
authors.forename: K S
authors.initials: KS
authors.lastname: Poon
authors.forename: O
authors.initials: O
authors.lastname: Moreira
authors.forename: E C
authors.initials: EC
authors.lastname: Jones
authors.forename: S
authors.initials: S
authors.lastname: Treissman
authors.forename: M E
authors.initials: ME
authors.lastname: Gleave
mesh_terms: D000293:Adolescent; D000328:Adult; D015653:Cystectomy; D003893:Desmin / Q000032:analysis; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D005260:Female; D006104:Granuloma, Plasma Cell / Q000175:diagnosis* / Q000601:surgery; D006417:Hematuria / Q000209:etiology; D006801:Humans; D007633:Keratins / Q000032:analysis; D007890:Leiomyosarcoma / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D001745:Urinary Bladder Diseases / Q000175:diagnosis* / Q000601:surgery; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis; D014746:Vimentin / Q000032:analysis
chemical_list: D003893:Desmin; D014746:Vimentin; D007633:Keratins