. General surgical pathology and therapeutics, in fifty lectures : a textbook for students and physicians. posed of small lobuli as large as a hemp-seed or a pea; and, if, afterartificial injection or other mode of preparation, we examine themmicroscopical^, we shall find that these lobuli are formed by the ves-sels of the sweat-glands, hair-follicles, fat-glands, and fat-lobuli, beingindependently diseased, and that the different small proliferating, vas-cular systems form the above-mentioned lobuli, which are visible to ANGIOMATA. G05 the naked eye. The reason for the color of these tumors b
. General surgical pathology and therapeutics, in fifty lectures : a textbook for students and physicians. posed of small lobuli as large as a hemp-seed or a pea; and, if, afterartificial injection or other mode of preparation, we examine themmicroscopical^, we shall find that these lobuli are formed by the ves-sels of the sweat-glands, hair-follicles, fat-glands, and fat-lobuli, beingindependently diseased, and that the different small proliferating, vas-cular systems form the above-mentioned lobuli, which are visible to ANGIOMATA. G05 the naked eye. The reason for the color of these tumors being some-times blood-red, sometimes pale bluish, is that, in the former case, thecapillaries of the most superficial layer of cutis, in the second, thedeeper vessels, are diseased. As a rule, this proliferation of vesselsdoes not go beyond the subcutaneous cellular tissue; rarely it affectsthe deeper tissues, such as the muscles ; whence it appears that theseneoplasias not only grow centrally, but especially peripherally, anddestroy the part affected. Most of these tumors may be slowly emp- Fig. Conglomeration of vessels from a plexiform angioma. Magnified 60 diameters, a, proliferatingvascular net-work around a sweat-gland (which is not shown, to prevent complicating thedrawing); b, proliferating vascular net-work in the papillae of the oral mucous membrane. tied by pressure, and again fill as soon as the pressure ceases. Butthere are also moderate-sized telangiectases, in which, besides theproliferation of vessels, there is also a new formation of connectivetissue and fat, so that they cannot be entirely removed by these new formations were superficial in the cutis, and theblood has been emptied from them after extirpation, with the nakedeye we can hardly see any thing abnormal in the morbid piece of skinthat has been removed; a moderate neoplasia of this variety appearson the ciit surface as a pale-reddish, soft, lobulated substance, in whichwe can see n
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