X hits on this document

PDF document

National Program of Cancer Registries - page 8 / 93

236 views

0 shares

0 downloads

0 comments

8 / 93

Colon/Rectum and Peritoneum

  • Colon/Rectum covered by serosa

    • Cecum

    • Transverse

    • Sigmoid

    • Anterior descending

    • Anterior ascending

    • Rectosigmoid

    • Upper third and anterior wall of middle third of rectum

  • Colon/Rectum without serosa

    • Posterior ascending

    • Posterior descending

    • Lower third of rectum

(rectal ampulla)

When determining tumor involvement and stage of disease, it is important to know which colon/rectum subsites are covered by serosa or peritoneum and which are not covered by peritoneum. Parts of the colon and rectum covered by serosa are also described as intraperitoneal. Intraperitoneal subsites include the cecum, transverse colon, sigmoid colon, the anterior portion of the descending colon, the anterior portion of the ascending colon, the rectosigmoid junction, and the upper third and anterior wall of the middle third of the rectum. Those subsites must invade the serosa before spreading to adjacent tissues and/or organs. Subsites that are not covered by peritoneum include the posterior ascending colon, the posterior descending colon, and the lower third of the rectum, also known as the rectal ampulla. Invasion into adjacent organs and tissues occurs without peritoneal involvement because the sites do not include serosa.

8

Document info
Document views236
Page views238
Page last viewedMon Dec 05 06:48:49 UTC 2016
Pages93
Paragraphs931
Words9635

Comments