Sarcoma of the stomach: clinicopathologic study of 43 cases.

The records of 43 patients with histologically proved primary gastric sarcoma treated at M. D. Anderson Hospital and Tumor Institute between 1945 and 1975 were reviewed. Weight loss, abdominal pain, and hematemesis or melena were the most common symptoms, and palpable epigastric mass was the most common physical sign. Ninety-five percent of the gastric tumors were leiomyosarcomas. The median survival time and the five-year survival for the 29 patients who had curative gastrectomy were 33 months and 38%, respectively. Morphologic and histologic factors that adversely influenced the length of disease-free interval and survival following curative surgery included 1) primary tumor 8 cm or greater in diameter, 2) tumor extension to serosa of the stomach, and 3) low grade of differentiation of the primary tumor. Seventy-seven percent of recurrences in patients with curative tumor resection occurred within two years of resection of the primary. Of the 17 patients with advanced disease who received chemotherapy, two (15%) had objective tumor regression of greater a median survival time of eight months for patients who failed to respond. New approaches that may improve the results of treatment of gastric sarcoma are discussed.