The pathology and surgical treatment of tumors . f the body. A papilloma of the skin underlow power presents in a hypertrophic condition all the tissues of whichthe skin is composed. Histolog-y and Patholog-y.—Papilloma of the skin, as shown inFigures 56 and 57, represents the same papillary structure as the skin, 137 138 PATHOLOGY AND TREATMENT OF TUMORS. the number of papillae depending on the size of the tumor. In papil-loma of the hypoblast the villi correspond with the papillae of theepiblastic papilloma. The connective tissue and the vessels occupythe centre of the papillae (Fig. 57, a),
The pathology and surgical treatment of tumors . f the body. A papilloma of the skin underlow power presents in a hypertrophic condition all the tissues of whichthe skin is composed. Histolog-y and Patholog-y.—Papilloma of the skin, as shown inFigures 56 and 57, represents the same papillary structure as the skin, 137 138 PATHOLOGY AND TREATMENT OF TUMORS. the number of papillae depending on the size of the tumor. In papil-loma of the hypoblast the villi correspond with the papillae of theepiblastic papilloma. The connective tissue and the vessels occupythe centre of the papillae (Fig. 57, a), and present, on vertical sectionof the tumor, finger-like projections conical in shape, the base corre-sponding with the base of the tumor, and the apex with the summitof each papilla. The epiblastic papilloma is covered by stratified layersof squamous epithelial cells. The new cells are produced near thevascular territory (Fig. 57, b\ As the cells become older they lose theliquid part of their contents by exposure on the surface and by more. Fig. 56.—Section of human skin (after Piersol): a, stratum corneum ; b, stratum lucidum; c, stratumgranulosum; d, stratum Malpighii; e,f, papillary and reticular layers of corium ; g, stratum of adipose tis-sue ; h, i, spiral and straight portions of duct of sweat-gland ; k, coiled portion of sweat-gland ; /, vascularloops occupying papillae of corium. distant removal from the vascular supply, forming the horny layer of thepapilloma (Fig. 57, c). The papilloma of the hypoblast is composed ofa connective-tissue stroma, usually softer and more vascular than thatof epiblastic papilloma, and of cells corresponding in type to the cellsof the mucous membrane in which the tumor is located. The pave-ments of cells which constitute the essential part of the tumor arc madeup of cylindrical cells. As hypoblastic tumors arc constantly exposedto maceration by the contents of the hollow organs in which they arelocated, the epithelial cells become c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
