Tanaka, Munchiro; Akahoshi, Kazuya; Chijiiwa, Yoshiharu; Sasaki, Itaru; Nawata, Hajine
April 1995
American Journal of Gastroenterology;Apr1995, Vol. 90 Issue 4, p662
Academic Journal
Using endoscopic ultrasonography, we diagnosed a gastric antral submucosal cyst with a papillous protrusion in a 71-yr-old woman, apparently the first such case to be detected by this method. Endoscopic ultrasonography demonstrated a well-marinated hypoechoic area with papillary tumor in the submucosal layer that did not extend to the muscularis propria. The lesion was diagnosed as a gastric submucosal cyst. CT and transabdominal ultrasound each failed to detect the Intracystic papillary tumor. Follow-up endoscopic ultrasonography performed 6 months later revealed an increase hi the diameter of the cyst and the papillary tumor. The patient then underwent a partial gastrectomy for a suspected malignancy. The resected specimen showed a cystic lesion with papillary tumor. Although no malignancy was present, examination of cross-sections of the resected specimen gave results consistent with the endoscopic ultrasonographic findings. Endoscopic ultrasonography is thus useful in assessing the nature of a submucosal gastric cyst in detail and in monitoring patients with this lesion.


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