title: Sclerosing inflammatory pseudotumor of the urinary bladder in a child.
abstract: A case of inflammatory pseudotumor of the urinary bladder in a 2-year-old child is presented. It was characterized by nodular intravesical growth and massive infiltration of the bladder wall. Microscopically, the lesion showed in its largest part a relatively paucicellular spindle cell growth and a sclerotic appearance with a thin superficial cellular zone resembling granulation tissue. Another morphological characteristic was a marked capillary proliferation revealed by immunohistochemical reactions to factor VIII-associated protein, laminin, and collagen IV. The last feature appears to be an integral part of the process, which most closely resembled fibromatosis of the adult type, a rare pattern of growth in inflammatory pseudotumor.
authors.affiliation: Department of Pathology, Institute of Oncology, Ljubljana, Slovenia.
authors.forename: J
authors.initials: J
authors.lastname: Lamovec
authors.forename: A
authors.initials: A
authors.lastname: Zidar
authors.forename: B
authors.initials: B
authors.lastname: Trsinar
authors.forename: J
authors.initials: J
authors.lastname: Jancar
mesh_terms: D002675:Child, Preschool; D015653:Cystectomy; D005260:Female; D005350:Fibroma / Q000175:diagnosis; D006104:Granuloma, Plasma Cell / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006801:Humans; D012598:Sclerosis; D009626:Terminology as Topic; D001743:Urinary Bladder / Q000473:pathology*; D001745:Urinary Bladder Diseases / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis