Jejunojejunal intussusception with chronic bleeding caused by gastrointestinal stromal tumor: a case report and literature review.

Background: Intussusception is a rare clinical condition in adults. The majority of patients present with symptoms of bowel obstruction. Intussusception is often misdiagnosed and the majority of cases are diagnosed intraoperatively. In this paper, we present a rare case of adult jejunojejunal intussusception with chronic bleeding caused by a gastrointestinal stromal tumor (GIST). We emphasize the role of contrast-enhanced computed tomography (CT) and enteroscopy in the presurgical diagnosis and the good prognosis in the high-risk GIST patient after surgery and targeted therapy. Case Description: Herein, we present the case of a 63-year-old female patient with small bowel intussusception with chronic bleeding caused by a GIST. Her main symptoms were intermittent melena and progressive anemia. She had a 20-year history of hypertension and had never undergone previous abdominal surgery. After failure of an esophagogastroduodenoscopy and colonoscopy to locate the hemorrhagic foci in the gastrointestinal tract, contrast-enhanced CT and enteroscopy were used and a small bowel intussusception and an intraluminal mass with a bleeding ulcer was identified. The patient underwent laparoscopic partial small bowel resection, and postoperative pathological examinations showed a small intestinal GIST with a high risk of recurrence. It was suggested that the patient take imatinib regularly for at least 3 years. At the time of writing, she has remained in good health without relapse for 24 months after discharge. We also review 20 published cases of intussusception caused by small bowel GIST in the PubMed database. Conclusions: Obscure gastrointestinal hemorrhage needs meticulous examinations to promptly determine the cause and location of bleeding. This case and literature review revealed that comprehensive surgical resection-centered treatment was the standard treatment for primary localized GISTs in patients at significant risk of relapse.