RT Book, Section A1 Gomella, Tricia Lacy A1 Cunningham, M. Douglas A1 Eyal, Fabien G. A1 Tuttle, Deborah J. SR Print(0) ID 1107525118 T1 Surgical Diseases of the Newborn: Abdominal Masses T2 Neonatology: Management, Procedures, On-Call Problems, Diseases, and Drugs, 7e YR 2013 FD 2013 PB McGraw-Hill Education PP New York, NY SN 9780071768016 LK accesspediatrics.mhmedical.com/content.aspx?aid=1107525118 RD 2024/04/24 AB Gastrointestinal masses are palpable abdominal masses that arise from the gastrointestinal tract are unusual and tend to be cystic, smooth walled, and mobile (depending on size). Causes include intestinal duplications and mesenteric cyst. Malignancy is rare.