Adenomyoma In The Gastric Antrum Misdiagnosed As Stromal Tumor: A Case Report And Literature Review

Gastric adenomyoma (AM) is a rare benign tumor of the stomach characterized by smooth muscle matrix insertion into gastric adenoid tissue. We report a case of a 59-year-old woman with gastric antrum AM hospitalized in our hospital due to intermittent upper abdominal pain, ongoing for one year. Gastroscopy revealed a submucosal mass approximately 2 centimeter (cm) in diameter in the gastric antrum. Histopathological examination showed that the arrangement of the gland was irregular, the smooth muscle bundles wrapped around the glands, and a small number of lymphocytes were infiltrated.