위의 평활근아세포종 = Leiomyoblastoma of the Stomach - Report of one case -

다국어 초록 (Multilingual Abstract)

Leiomyoblastoma is an uncommon intrarnural tumor of the stomach. It was first described in 1960 by Martin et al.. Stout reported a series of 69 simiIar cases and propoaed the term leiomyoblastoma in 1962. A 65 year old female patient presented with epigastric pain for two years. She took several episodes of transfusion for recent 2 years. UGI, gastrofiberscopy and abodinal CT showed a submucosal mass, located at anterior wall. Subtotal gastrectomy was perfomed under the impression of leiomyosarcoma, The final hiatologic diagnosis was leiomyoblastoma. The smooth muscle origin of this tumor was conffrmed positive staining for MaaSons trichrome and by intracellular myofibrils on electron microscopic studly. Cytoplaamic clear zonee, previously thought to be typical of the light microscopic moryhology of leiomyoblastoma, was not observed by electron microscopy, suggesting that they may be an artifact of fixation. The pragnosie of leiomyoblastoma may be related to tumor size, the numbers of mitotic figures and most impurtantly cellular characteristics.