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==Description==
==Description==
[[Image:intussusception.jpg|thumb|right|200px|Diagram of intussuscception (Courtesy of Elspeth Milne)]]
'''Intussusception''' is the invagination of one portion of the gastrointestinal tract into the lumen of the adjacent portion. The intussusceptum is the invaginated segment and the intussuscipien is the enveloping segment. A normograde intussusception is most common, but retrograde intussusception has also been reported.
'''Intussusception''' is the invagination of one portion of the gastrointestinal tract into the lumen of the adjacent portion. The intussusceptum is the invaginated segment and the intussuscipien is the enveloping segment. A normograde intussusception is most common, but retrograde intussusception has also been reported.
===Pathology===
===Pathology===
The degree of damage to the intestine depends on the severity of the intussusception. In severe or chronic cases fibrinous adhesions form between surfaces making the structure irreducible. Necrosis of the tissue usually follows.
The degree of damage to the intestine depends on the severity of the intussusception. In severe or chronic cases fibrinous adhesions form between surfaces making the structure irreducible. Necrosis of the tissue usually follows.