筋原性腫瘍と類似した超音波内視鏡像を呈した胃膿瘍の1例

抄録

A 63-year-old Japanease male was incidentally pointed out a elevated lesion on the greater curvature of the upper stomach body at a health check. Subsequent endoscopic examinations were followed up periodically for 6 years. The internal echo pattern of elevated lesion, which was resembled to myogenic tumor changed by the Endoscopic ultrasonography (EUS) in February 1998, so he admitted to our hospital for further invastigation and treatment. Endoscopic and upper gastrointestinal double contrast X ray examinations showed the nodular elevated lesion with mucosal bridging fold, which had no ulceration. EUS revealed submucosal tumor, which was the 27mm in diameter and seemed to be originated from 3rd to 4th layers, and showed cystic and solid internal echo pattern. So, we attempted EUS guided fine needle aspiration cytology (FNA) to the elevated lesion, then which was diagnosed gastric abscess. To date, only 16 cases of gastric abscess have been reported in Japan and no cases have been diagnosed by EUS guided FNA cytology. EUS guided FNA cytology will be of help to evaluate gastrointestinal submucosal lesion in the near future. We reported a case of gastric abscess, which resembled to myogenic tumor of the stomach by endoscopic ultrasonography.