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Small bowel (small intestine)



Reviewer: Hanni Gulwani, M.D. (see Reviewers page)
Revised: 18 December 2012, last major update August 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.


● Mechanical causes: adhesions, atresia, bands, congenital stricture (children), fecaliths, foreign bodies, gallstones, hernias, inflammation, intussusception, mesenteric ossification (Am J Surg Pathol 1999;23:1464), systemic disease (diabetes, scleroderma), tumors, volvulus
● Disturbances in peristalsis: Hirschsprung’s, ileus-postoperative paralytic, myopathy
● 80% due to hernias, intestinal adhesions, intussusception, volvulus
● May cause stasis, with resulting malabsorption
● Symptoms: distension, failure to pass flatus, pain, vomiting


● Dietary changes, medication (octreotide), surgery, intestinal transplantation

Micro description

● Patchy mucosal changes of variable villus abnormality, increased chronic inflammatory cells in epithelium and lamina propria, occasional neutrophils

End of Small bowel (small intestine) > Obstruction > Obstruction-general

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