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  • Title: Sclerosing inflammatory pseudotumor of the urinary bladder in a child.
    Author: Lamovec J, Zidar A, Trsinar B, Jancar J.
    Journal: Am J Surg Pathol; 1992 Dec; 16(12):1233-8. PubMed ID: 1463096.
    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.
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