A case of hemangiopericytoma arising in the urinary bladder is presented. Initial symptoms included hematuria and frequency of urination. Hemangiopericytoma is a vascular tumor of pericyte origin which occurs primarily in several organs and can be benign or malignant. Reports in the literature of genitourinary system involvement are reviewed. It is concluded that genitourinary tumors of this type should be considered malignant and treated aggressively.
We assigned 49 patients with transitional cell carcinoma of the bladder to 1 of 3 groups: 21 patients (group 1) received cyclophosphamide alone, 10 patients (group 2) received adriamycin alone and 18 patients (group 3) received cyclophosphamide and adriamycin. The objective responses were 52.3 per cent in group 1, 10 per cent in group 2 and 50 per cent in group 3. These results suggest a significant activity of the drugs (especially in groups 1 and 3) tested in bladder cancer.
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