Abstract
It is rare that adenomyomatous change occurs in the stomach. We experienced a case of submucosal tumor of the cardiac part of the stomach presenting adenomyomatous change in the greater part of the lesion. An 82-year-old man was seen at the hospital because of difficulty in swallowing which started in around August, 1993. Upper gastrointestinal endoscopy revealed a submucosal tumor at the cardiac part of the stomach and the patient was admitted on December 7, 1993. After admission polypectomy was tried, but it was impossible because the tumor was too large. The patient appeared to be a candidate for operation. Under left thoracolaparotomy the lower part of the esophagus and cardiac part were excised. After the operation the patient experienced poor appetite for a temporal regurgitation, but thereafter his clinical course was uneventful. He was dischaged from the hospital on November 22, 1993. Histopathologically the excised specimen revealed a rare adenomyomatous proliferation in the submucosal layer. Specific immunostaining disclosed diffused coexistence of deeply stained myofiber and glandular tissue.
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