RT Book, Section A1 Densmore, John C. A1 Lal, Dave R. A2 Rudolph, Colin D. A2 Rudolph, Abraham M. A2 Lister, George E. A2 First, Lewis R. A2 Gershon, Anne A. SR Print(0) ID 7036807 T1 Chapter 404. Intussusception T2 Rudolph's Pediatrics, 22e YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-149723-7 LK accesspediatrics.mhmedical.com/content.aspx?aid=7036807 RD 2024/03/29 AB Intussusception occurs when one portion of the small bowel (intussusceptum) peristalses into the lumen of a downstream portion (intussuscipiens), much like a collapsing telescope. Once this prolapse has occurred, lymphatic and venous drainage of the intussusceptum is impaired. This results in edema, strangulation, ischemia, and ultimately necrosis if the intussusception persists. Additionally, the lumen of the intussuscepted portion of bowel collapses, causing intestinal obstruction.