Small intestine & ampulla
Benign tumors / tumor-like conditions

Topic Completed: 1 August 2012

Minor changes: 13 March 2019

Copyright: 2003-2019,, Inc.

PubMed Search: Intussusception[TI] small bowel[TI] free full text[sb]

Hanni Gulwani, M.B.B.S.
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Cite this page: Gulwani H. Intussusception. website. Accessed August 3rd, 2020.
Definition / general
  • Portion of bowel (intussuscipiens) swallows another length of bowel (intussusceptum)
  • Usually occurs during first 5 years of life, 50% within first year (BMC Pediatr 2012;12:36)
  • May be due to lymphoid hyperplasia in ileocecal region secondary to adenovirus or other viral infections
  • In older patients, may be associated with HIV or due to pedunculated intraluminal lipoma or leiomyoma that serves as point of traction
  • Complications: ischemic necrosis due to compression of vessels
Case reports
  • Manual reduction, barium enema, resection
Clinical images

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Gentle reduction of the ileoileal intussusception

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