After a long symptom period of 19 years a submucosal tumor was suspect
ed on endoscopy to account for the patient's intermittent nausea and a
bdominal pain. Duodenal waterfilling during endoscopic ultrasound led
to the endosonographic diagnosis of an intraluminal duodenal diverticu
lum which was removed surgically. The patient became completely asympt
omatic.