抄録
A 78 years old man with abdominal pain was referred to our hospital for suspicion of dissecting abdominal aneurysm. Abdominal CT and ultrasonography revealed not only abdominal aneurysm but also a small intestinal tumor with cystic component in contact with the rectum. His abdominal pain was caused by intermittent intestinal obstruction by the tumor. We suspected that the tumor adhered to the rectum by CT and Echoendoscopy. Finally, he was diagnosed as having GIST of the small intestine by the EUS-FNA specimen which was obtained via the rectal wall. We performed a surgical resection.
In case of a tumor adhered to the intestinal tract wall, EUS-FNA is an effective examination for histological diagnosis.
