A Case of Gastric and Colonic Submucosal Tumors after the Removal of 51 Anisakis Larvae / 대한내과학회지

ABSTRACT

A 60-year-old man visited the outpatient clinic complaining of spasmodic abdominal pain. The symptoms had started 4 days previously, within 1 hour of eating sliced raw flatfish (sashimi) and a piece of flatfish gut. Gastroscopy revealed generalized mucosal edema, erythema, multiple erosions, and numerous worms penetrating the gastric mucosa at the greater and lesser curvatures of the middle and lower corpora. Fifty-one worms, 0.5-3 cm in length, were successfully removed with biopsy forceps. Three weeks later, a normal mucosa-covered, 3.5-cm round submucosal tumor (SMT) was found on the greater curvature of the lower corpus and four yellowish, 1-cm SMTs were found on the hepatic flexure of the colon. Histopathological examination revealed marked eosinophilic infiltration in the gastric and colonic mucosa and an eosinophilic abscess in the submucosa. Here, we report a case of eosinophilic granuloma manifesting as SMTs in the stomach and colon after the endoscopic removal of a large number of anisakids.