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Difference between revisions of "Rectum"
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[[Image: Rectum - lateral view.jpg |thumb| right |[[Abdominoperineal_resection_grossing|Abdominoperineal resection specimen]] showing the rectum.]] | [[Image: Rectum - lateral view.jpg |thumb| right |[[Abdominoperineal_resection_grossing|Abdominoperineal resection specimen]] showing the rectum.]] | ||
Pathologist generally agree that: the rectum starts/sigmoid ends at the place where serosa ends on the posterior aspect of the bowel | Pathologist generally agree that: the rectum starts/sigmoid ends at the place where serosa ends on the posterior aspect of the bowel. | ||
In other words, the ''peritoneal reflection'' is the landmark that separates the sigmoid colon and rectum. | |||
On a practical level, the definition is not easy to apply from the lumen, i.e. the definition is not practical in the endoscopic context. | |||
Note: | Note: | ||
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***35% of all respondants considered the peritoneal reflection the proximal boundary of the rectum. | ***35% of all respondants considered the peritoneal reflection the proximal boundary of the rectum. | ||
**30% defined the proximal boundary as a distance from the anal verge. | **30% defined the proximal boundary as a distance from the anal verge. | ||
==See also== | ==See also== | ||