. Surgery, its principles and practice . ^ ?^^tV^^. Fig. 102.—Section op Lymphatic Vessel in Submucosa op Rectum, Showing Mass of CellsPROM a Carcinoma (X about 250 diameters). from the rectum, or secondary invasion of the rectum by tumors arisingin any of these organs. A consideration of a few points in regard to the anatomic position of therectum itself and of the pelvic nodes may therefore be of interest. If we accept the definition of Sir Frederick Treves, by which thesigmoid terminates at the level of the attachment of the mesentery infront of the third sacral vertebra, there is but a sma
. Surgery, its principles and practice . ^ ?^^tV^^. Fig. 102.—Section op Lymphatic Vessel in Submucosa op Rectum, Showing Mass of CellsPROM a Carcinoma (X about 250 diameters). from the rectum, or secondary invasion of the rectum by tumors arisingin any of these organs. A consideration of a few points in regard to the anatomic position of therectum itself and of the pelvic nodes may therefore be of interest. If we accept the definition of Sir Frederick Treves, by which thesigmoid terminates at the level of the attachment of the mesentery infront of the third sacral vertebra, there is but a small portion of the rec-tum which is intraperitoneal, and this free surface is ventral, formmg aportion of the posterior wall of the rectovesical pouch, or, in the female,the cul-de-sac of Douglas. The mucous membrane of the rectum is com-posed of a series of deepand narrow follicles lined with high cylindric epithelium, the crypts ofLieberkiihn. Many of the epithelial cells contain more or less mucus,especially when a chronic inflammation is pres
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