Resumo

MONET FERNANDEZ, Yadiel Esteban; RODRIGUEZ GONZALEZ, Manuel; RODRIGUEZ CACERES, Juan Miguel  e  MONET DIAZ, Marcos Alejandro. Anatomy segmentation of the rectal. New approach. Rev.Med.Electrón. [online]. 2020, vol.42, n.4, pp. 2032-2038.  Epub 30-Ago-2020. ISSN 1684-1824.

To present a recent an anatomic classification of rectal tumor localization. Review of many anatomy treaties. The rectal internal morphology studies recognize the formation of thick folds of transversal mucosa thick folds named valves: a low valve to 7 cm from anus. Another is to 2 cm upper with a half moon form, a third one to 11 cm from anus. As this valves are mucosal folds without a clear localization they can’t be consider as anatomical points to the rectum segment. Therefore, the rectal segmentation as the limit between up and low rectum, is located in the peritoneal reflection. In the rectal tumors diagnosis definition of it’s anatomic situation is important for the therapeutic behavior, because the low rectum has its embryologic origin in the Proctodeum (ectoblastic). It can be more sensitive to the radiation the up rectum tumors are originated from the formation entoblast tissue (endoblast) the radiations cause peritoneal injuries and other pelvic cavity organs. The rectal segmentation is important for the locate-regional tumor stadium and for the appropriate treatment definition. In first place, establish the anatomic concept of the low rectal tumor localization. In second place defines which are the complementary for the new adjuvant indication.

Palavras-chave : anatomy; embryology; rectal segmentations.

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