The results of chemotherapy for patients with advanced leiomyosarcoma of gastric origin were analyzed. A total of 23 single-agent and multi-drug regimens were given to 17 patients. DTIC and adriamycin (ADR) were the most commonly used chemotherapeutic agents. ADR was used alone or in combination in 13 patients, resulting in partial responses in two patients and disease stabilization in seven. One of the partial responses was obtained with the ADR-DTIC combination and the other was obtained with the cyclophosphamide-vincristine-ADR-DTIC combination. The survival duration for the responders was significantly longer than that obtained for those patients who had disease stabilization or progression. The results of the study show that leiomyosarcoma of gastric origin is less sensitive to chemotherapeutic agents than leiomyosarcomas of other sites, as reported in the literature. New approaches based on the natural history of the disease and with potential to improve the results of treatment of gastrointestinal sarcomas are indicated.
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