TY - CHAP M1 - Book, Section TI - Benign Tumors of the Small Intestine A1 - McQuaid, Kenneth R. A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. PY - 2023 T2 - Current Medical Diagnosis & Treatment 2023 AB - Benign and malignant tumors (see Chapter 39 for Malignant Tumors) of the small intestine are rare, accounting for 3–6% of GI neoplasms. They often cause no symptoms or signs. However, they may cause acute GI bleeding with hematochezia or melena or chronic GI blood loss resulting in fatigue and iron deficiency anemia. Small bowel tumors may cause obstruction due to luminal narrowing or intussusception of a polypoid mass. Neuroendocrine tumors may present with diarrhea, flushing, or wheezing. Small bowel tumors usually are identified by video capsule endoscopy, CT or MR enterography, or barium small bowel series. Visualization and biopsy of duodenal and proximal jejunal mass lesions are performed with a long upper endoscope known as an enteroscope. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accessmedicine.mhmedical.com/content.aspx?aid=1193151587 ER -