[2 cases of the independent coexistence of early cancer and leiomyosarcoma in the same stomach].

In the past 10 years, malignant diseases have been revealed in 157,836 autopsy cases (in Japan). Among them, gastric cancer was found in 17.5% and leiomyosarcoma in 0.45%. In addition, the frequency of leiomyosarcoma of the stomach was only 0.08%. In the literature, 20 cases of the coexistence of cancer and leiomyosarcoma in the same stomach (were) reported in Japan prior to (data). Eight of these were early cancer. Subsequently, three cases, including two of our own, were added. In our two patients, early cancer and leiomyosarcoma coexisted independently in the same stomach. It is suggested that the stomach with leiomyosarcoma may have a tendency to be cancerous.