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신승민 ( Seung Min Shin ),박상만 ( Sang Man Park ),황병식 ( Byung Sik Hwang ),설수환 ( Soo Hwan Seol ),서향은 ( Hyang Eun Seo ),김세환 ( Se Hwan Kim ),구미진 ( Mi Jin Gu ),신지열 ( Ji Yeol Shin ) 대한소화기학회 2010 대한소화기학회지 Vol.56 No.6
Mesothelioma is a rare aggressive tumor arising from the mesothelial cell and regarded as universally fatal disease with average survival around 1 year. The incidence rate is varied from one to forty per million in different countries and increasing by the year. The most common site of tumor origin is the pleura and only 20% to 33% of mesothelioma arise from the peritoneum. There are increasing reports of malignant mesothelioma with forty to fifty fatal cases per year in Korea. Histological studies with immunohistochemical stain is helpful for the diagnosis of peritoneal mesothelioma and imaging modality alone is not sufficient for diagnosis, so it is difficult to confirm diagnosis. A 64-year-old male patient was admitted to the hospital with a palpable mass on abdomen. The 6×6 cm sized huge mass was seen on the body of stomach adjacent to the peritoneum. We report a case of malignant peritoneal mesothelioma without evident exposure to asbestos, of which direct invasion to the gastric mucosa was confirmed by endoscopic biopsy and immunohistochemical stain. (Korean J Gastroenterol 2010;56:377-381)