A rare case of adenomyoma of the stomach is presented together with its ultrasonographic findings by an endoscope. A 27-year-old-woman was referred to the hospital because of epigastric pain. An umbilicated submucosal tumor, 2cm in diameter, of the prepyloric region was disclosed by an endoscopy. Endoscopic ultrasonography (EUS) showed an irregular-shaped low-echoic lesion with hetero-echogenic inner part mainly in the fourth layer of the stomach. The patient underwent a partial resection of the stomach including the lesion and the diagnosis of adenomyoma was made by a frozen section during operation. The tumor 4.0×3.8cm in side. was composed of cysts and grandular structures lined by cuboidal-to-columnar epithelium surrounded by hypertrophic smooth muscle bundles. Furthermore, glands resembling pancreatic acinic cells were present. As of one year and 5 months after the surgery, she is doing well without paticular subjective symptoms. The usefulness of EUS in this case would be emphasized. The endoscopic and ultrasonographic characteristics of the lesion are discussed as well as diagnostic and therapeutic approaches.
Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)