3-6-9 rule (bowel)
Last revised by Subhan Iqbal on 5 Dec 2022
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Citation:
Hacking C, Iqbal S, Saber M, et al. 3-6-9 rule (bowel). Reference article, Radiopaedia.org (Accessed on 18 Apr 2024) https://doi.org/10.53347/rID-66259
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66259
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Disclosures:
At the time the article was created Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Last revised:
5 Dec 2022,
Subhan Iqbal
Disclosures:
At the time the article was last revised Subhan Iqbal had no financial relationships to ineligible companies to disclose.
View Subhan Iqbal's current disclosures
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10 times, by
8 contributors -
see full revision history and disclosures
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The 3-6-9 rule is a simple aide-memoire describing the normal bowel caliber:
small bowel: <3 cm
large bowel: <6 cm
appendix: <6 mm
cecum: <9 cm
Above these dimensions, the bowel is generally considered dilated, and obstruction or an adynamic/paralytic ileus should be considered.
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