Abstract

Gastrointestinal stromal tumor is an uncommon tumor with most of these lesions occurring in the stomach.
Patients present with nonspecific symptoms including bleeding, abdominal pain, and abdominal mass. The diagnosis
of this tumor is made using various imaging modalities (CT, MRI and endoscopic ultrasound) and sampling
techniques (fine needle aspiration, biopsy, and surgical excision). We report the unusual case of a rare pedunculated
gastrointestinal tumor diagnosed by imaging studies, prior to surgery, as a malignant pancreatic tumor (mucinous
cystadenocarcinoma).

Keywords: Gastrointestinal stromal tumor; GIST; Pancreatic mucinous cystadenocarcinoma