Jejunum vs ileum
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Citation:
Knipe H, Di Muzio B, Sharma R, et al. Jejunum vs ileum. Reference article, Radiopaedia.org (Accessed on 23 Mar 2025) https://doi.org/10.53347/rID-43032
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rID:
43032
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Disclosures:
At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
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Disclosures:
At the time the article was last revised Bruno Di Muzio had no recorded disclosures.
View Bruno Di Muzio's current disclosures
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- Jejunum versus ileum
There are a few differences that can help differentiate jejunum and ileum 1-3:
- location
- jejunum: upper left part of the peritoneal cavity
- ileum: lower right part of the peritoneal cavity
- gross appearance
- interior
- jejunal folds (valvulae conniventes) are thicker (2-3 mm) than ileal folds (1-2 mm)
- jejunal folds are also more numerous and deeper than ileal folds
-
mesentery
- jejunum: less fat, longer vasa recta, fewer arterial arcades
- ileum: more fat, more arterial arcades, shorter vasa recta
- immunology
- presence of aggregated lymphoid follicles (Peyer patches), more prominent in the ileum
References
- 1. Levine MS, Rubesin SE, Laufer I. Pattern approach for diseases of mesenteric small bowel on barium studies. Radiology. 2008;249 (2): 445-60. doi:10.1148/radiol.2491071336 - Pubmed citation
- 2. Buttler P. Applied radiological anatomy. Cambridge University Press. (1999) ISBN:0521481104. Read it at Google Books - Find it at Amazon
- 3. Brant WE, Helms C. Fundamentals of Diagnostic Radiology. LWW. ISBN:1608319113. Read it at Google Books - Find it at Amazon
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