. A practical treatise on tumors of the mammary gland: . tions,as the myxomatous, fatty, telangiectatic, cystoid, andcalcareous, the latter of which will be consideredunder the degenerations to which these tumors areliable. In accordance with the dimensions of thecells, they are, moreover, separated into the small-celled and the large-celled. 1. Eoufd-Celled Saecoma. — The structure ofround-celled sarcoma, which is equivalent to the em-bryoplastic tumor of Robin, the medullary sarcomaof Miiller, the granulation sarcoma of Billroth, andthe encephaloid sarcoma of Comil and Ranvier, isusually com
. A practical treatise on tumors of the mammary gland: . tions,as the myxomatous, fatty, telangiectatic, cystoid, andcalcareous, the latter of which will be consideredunder the degenerations to which these tumors areliable. In accordance with the dimensions of thecells, they are, moreover, separated into the small-celled and the large-celled. 1. Eoufd-Celled Saecoma. — The structure ofround-celled sarcoma, which is equivalent to the em-bryoplastic tumor of Robin, the medullary sarcomaof Miiller, the granulation sarcoma of Billroth, andthe encephaloid sarcoma of Comil and Ranvier, isusually composed mainly, as is seen in fig. 7, of fra- From a section of a tumor, of twelve months duration, which had invadedtwo-thirds of the right mamma of a spinster forty-two years of age. Its con-sistence was firm and elastic, except at a spot as large as a silver dollar, where VARIETIES. G7 gile spherical cells, of the size of lymph corpuscles,and provided, as a rule, with a single round or ovoidnucleus, which is large when compared with the pro- FiG. Small Round-Celled Sarcoma.—«, Transverse section of a duct, partially filledwith hyperplastic epithelium, e, and limited by its raembrana propria, 5, theendothelial cells of which are very apparent, c c, and d, Transverse sectionsof vessels with embryonic walls. /, Longitudinal cut of a vessel. toplasm of the cell, and held together by a scanty,soft, amorphous, dimly granular, or finely iibrillatedintercellular substance. Numerous large but delicatevessels pervade the tissue, and are very liable to rup-ture. From these general features there are somehistological variations whereby certain subdivisionsare constituted. a. Lymplioid Sarcoma.—^When the intercellularsubstance forms a delicate reticulum of hyaline fibres,the meshes of which are occupied by a single cell, as it was somewhat soft, and the skin was tense and livid. The nipple and axillaryglands were normal, and there were no adhesions to the chest. The cut surfaceo
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