[Diagnosis and treatment of malignant bladder non-epithelial tumors].

Objective: To study the clinical diagnosis, treatment, and prognosis of malignant bladder non-epithelial tumors.

Methods: The clinical data of 17 cases with malignant bladder non-epithelial tumor, 15 males and 3 females, aged 28 (3-73), were analyzed.

Results: Ten of the 17 cases were diagnosed as with rhabdomyosarcoma, 2 with malignant lymphoma, and 2 with malignant pheochromocytoma, 2 with leiomyosarcoma, and 1 with carcinosarcoma. All patients underwent operation, or were treated with radiotherapy or chemotherapy. Among the 10 cases with rhabdomyosarcoma, 7 were aged under 5, 5 of them survived for more than 8 years, and 2 were lost to follow-up; other 3 adult patients died in one year with metastasis all over the body. Two patients with malignant lymphoma underwent partial cystectomy and adjuvant radiotherapy or chemotherapy, and survived for more than 3 years. Of the 2 cases with malignant pheochromocytoma, one underwent lymphadenectomy and adjuvant chemotherapy and survived for more than 5 years; and another case died 2 years after operation and chemotherapy. Two patients with leiomyosarcoma underwent simple resection, one survived for more than 5 years; and another survived 1 year after operation. One case with carcinosarcoma receiving operation followed by chemotherapy died in one year.

Conclusion: Malignant bladder non-epithelial tumors are rare clinically and most of them occur in children. Most of them are rhabdomyosarcoma. The prognosis of malignant bladder non-epithelial tumors, different in pathological types, is relatively worse in adults.