Adenomyoma in the Body of Stomach Presenting as a Pedunculated Polyp Treated by Endoscopic Mucosal Resection

An adenomyoma is a rare, benign tumor, characteristically composed of a mixture of glandular structures with intervening bundles of smooth muscle. An adenomyoma is considered to be a variant of an ectopic pancreas, without exocrine or endocrine components. Adenomyomas of the gastrointestinal tract are found most frequently in the stomach and the small intestine is rarely involved. Gastric adenomyoma is frequently localized in the antrum or pylorus and very rarely occurs in the body. Adenomyomas often appear as a submucosal mass. A 48-year-old man was referred for further management of a 2.5-cm pedunculated polyp in the stomach. The resected tumor was diagnosed as an adenomyoma of the stomach. To the best of our knowledge, this is the first case reported in the literature of gastric adenomyoma that presented as a pedunculated polyp in the body and was treated completely with endoscopic resection.

A Case of Colitis by Giardia lamblia Infection with Atypical Presentation / 대한내과학회지

Giardia lamblia infection, giardiasis, is the leading waterborne diarrhea-causing disease. It is common in most countries of the world, including South Korea and Japan. Giardia lamblia can cause asymptomatic infection but also acute abdominal discomfort with diarrhea. In addition, it may lead to chronic diarrhea associated with villous atrophy and impaired epithelial barrier in the small intestine. In the present case, a 45-year-old woman presented with lower abdominal discomfort in the absence of diarrhea. Colonoscopy showed diffuse mucosal edema, erythema, and erosions with exudate in the cecum and ascending colon. Colonoscopic biopsy and stool examination revealed trophozoites of Giardia lamblia. Colitis resolved after metronidazole therapy. Our case suggests that giardiasis should be included in the differential diagnosis of colitis, even if the patient does not present with diarrhea.