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==Definition== | ==Definition== | ||
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/the 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. | In other words, the ''peritoneal reflection'' is the landmark that separates the sigmoid colon and rectum. | ||
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