DURING the past eighteen months our interest in nonepithelial tumors of the stomach has been stimulated by the appearance of a relatively large number of such lesions. Although the mesenchymal group of neoplasms consists of lymphosarcomas, leiomyomas, leiomyosarcomas, fibromas, neurofibromas, and lipomas, the lymphosarcomas and leiomyomas are by far the most important in both frequency and clinical significance.
It has been estimated by various authors1 that sarcomas constitute only 1 to 2% of all gastric neoplasms. Our unusual experience is illustrated by the fact that lymphosarcomas have accounted for 14.3% of all gastric neoplasms found in a total of 5,183 examinations of the stomach made during the past 18 months.
During the same period, we have discovered five clinically significant leiomyomas of the stomach—representing an additional 4.2% of all gastric neoplasms. Although this figure agrees more closely with that reported elsewhere,2 many of the previous reports are based