. Diseases of the rectum and anus: designed for students and practitioners of medicine. ly vascular, and extremelymalignant. It is inclined to ulcerate early and to lead to con-siderable bleeding, and is accompanied by a very offensive dis-charge, which is sometimes discolored by the pigment. Thisvariety of carcinoma is rare in the human subject, but is notinfrequently encountered in the horse. It very probably be-longs to the sarcomata (page 523). The author knows of but one published case of ossifyingcarcinoma of the rectum, namely: the one recorded bv Wag-staffe. In this case the neoplasm w
. Diseases of the rectum and anus: designed for students and practitioners of medicine. ly vascular, and extremelymalignant. It is inclined to ulcerate early and to lead to con-siderable bleeding, and is accompanied by a very offensive dis-charge, which is sometimes discolored by the pigment. Thisvariety of carcinoma is rare in the human subject, but is notinfrequently encountered in the horse. It very probably be-longs to the sarcomata (page 523). The author knows of but one published case of ossifyingcarcinoma of the rectum, namely: the one recorded bv Wag-staffe. In this case the neoplasm was of considerable size, nod- EXPLANATION OF PLATE XXXII Metastatic deposits in lymph-node from carcinoma ofrectum. The small black spots are the nuclei of thelymph-cells, representing the original tissue of the node. The protoplasm of the infiltrating carcinoma-cells is *pale and swollen, containing much colloid material, thenuclei being relatively small and in many instances dis-placed toward the periphery of the cell. In some cellsthe nucleus has entirely disappeared. FLUTE XXXII. Metastatic JjEpnsitin Lymph-nnde from Calloiti Carcinoma of the Rectum,[Magnificatinn, 250,] MALIGNANT TUMORS 521 ular, and when incised was found to contain several sharp-pointed pieces of bone. The growth had no connections withthe sacrum, coccyx, or other bony structures of the pelvis. Sarcoma,—Sarcoma rarely occurs in the rectum, and in thisregion of the body attacks men much more frequently thanwomen (Plate XXXIII). It is unquestionably a disease ofadult life, though in the young it is more common than othermalignant neoplasms. The ages at which intestinal sarcomais most frequent is shown by Boass analysis of Krugersstatistics, viz:— Table XIX. Frequency of Intestinal Sarcoma in Different Decades3 cases in the first decade. 3 cases in the second cases in the third decade. 10 cases in the fourth decade. 5 cases in the fifth decade. 6 cases in the sixth decade. 4 cases in the sevent
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