RT Book, Section A1 Ursem, Carling A1 McQuaid, Kenneth R. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. A2 McQuaid, Kenneth R. SR Print(0) ID 1184389769 T1 Malignancies of the Small Intestine T2 Current Medical Diagnosis & Treatment 2022 YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264269389 LK accessmedicine.mhmedical.com/content.aspx?aid=1184389769 RD 2024/04/23 AB The frequency of different tumor types varies by location within the small intestine. Adenocarcinomas are most common in the duodenum and jejunum and neuroendocrine tumors, in the ileum. Lymphomas and sarcomas each have similar incidences in the various segments of the small intestine.