General surgery and pathology for dentists . Fig. OF SKIN epithelium. In simple papillomata the stroma is single andundivided, but in compound papillomata it gives off numerouscauliflower-like branches which subdivide again and again. Papillomata are innocent growths, but it should be remem-bered that in some situations, such as the tongue and lower PATHOLOGY AND SURGERY. 87 lip, they are prone to become epitheliomatous, especially inold people. This change may be recognized by the base ofthe wart becoming indurated. Treatment. Warts on the skin may be destroyed withnitric acid. F
General surgery and pathology for dentists . Fig. OF SKIN epithelium. In simple papillomata the stroma is single andundivided, but in compound papillomata it gives off numerouscauliflower-like branches which subdivide again and again. Papillomata are innocent growths, but it should be remem-bered that in some situations, such as the tongue and lower PATHOLOGY AND SURGERY. 87 lip, they are prone to become epitheliomatous, especially inold people. This change may be recognized by the base ofthe wart becoming indurated. Treatment. Warts on the skin may be destroyed withnitric acid. From mucous membranes they may usually besnipped off with scissors. When they are at all induratedthey should be freely removed with the knife or scissors. Adenoma. Adenomata are tumours composed of gland tissue. Apure adenoma (, one containing no more connective tissue. Fig. 18. FIBRO-ADENOMA OF THE BREAST, Showing Ducts and Dilated Acini. than a normal gland would), is very rare. There is nearlyalways an excess of connective tissue which may be eitherfibrous (adenOfibroma)^ mucous {adeno-myxoma), or sarco-matous (adeno-sarcoma). The gland tissue itself may be 88 PATHOLOGY AND SURGERY. either acinous in structure like that of the breast (see Fig. 18)or tubular like the follicles of the rectum. Adenomata are innocent tumours, unless their connectivetissue is sarcomatous, in which case they are malignant, themalignancy depending not on the epithelial but upon theconnective tissue elements. Treatment. Removal by operation. Carcinoma. Carcinomata are tumours composed of epithelial cellsarranged in clusters within spaces or alveoli formed by con-nective tissue. The individual epithelial cells lie in immediatecontact with one another, not being separated by any matrixor intercellular substance. They vary in size and shape, and
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