HISTOGENESIS OF MINUTE LEIOMYOMA OF THE STOMACH

概要

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In order to reveal the histogenesis of leiomyoma which may arise from the muscle layar of the stomach, a histological study was carried out on 32 leiomyomas out of 30 cases obtained at autopsy in Tokyo Geriatric Hospital (1958-1969) and surgical specimens in Gunma University Hospital (1958-1977). There were 17 males and 13 females in this series. All sections were stained by Haematoxylin and Eosin and Mallory Azan. In addition Van Geison, silver stain and S-100 protein stain were also used if necessary.<BR>In this series, minute leiomyomas under 5 mm in diameter were in 11 cases (34.3%). The relationthips between the location of minute leiomyomas and growth types were discussed. Results of this study were as follows :<BR>1) Eighty per cent of leiomyomas of the stomach was located at upper third portion of the stomach as the exogastric type.<BR>2) The smaller the size of gastric leiomyoma, the higher the incidence of exogastric type at fundus of the stomach.<BR>3) Eighty two per cent of minute leiomyomas was assumed to be originated from the external muscle layer. 45 per cent of leiomyomas might grow outard and 36 per cent of them might be situated as the intramural type.
北関東医学会の論文