. A practical treatise on tumors of the mammary gland: . of the neoplasm. In some spe-cimens, even of large dimensions, when, in additionto enlargement of the ducts, there is progressive newgrowth of their membrana propria, the fissures are sostretched that they persist as such, their inner sur-faces being merely moistened by a slight amount ofclear viscid fluid. In others-, again, through the accu-mulation of their contents, they assume the fonn ofrounded or elongated and wide cavities, and may Labbe and Coyne, op. cif. Virchow, op. cit., Chapters on fibroma, sarcoma, and myxoma. Path, und An
. A practical treatise on tumors of the mammary gland: . of the neoplasm. In some spe-cimens, even of large dimensions, when, in additionto enlargement of the ducts, there is progressive newgrowth of their membrana propria, the fissures are sostretched that they persist as such, their inner sur-faces being merely moistened by a slight amount ofclear viscid fluid. In others-, again, through the accu-mulation of their contents, they assume the fonn ofrounded or elongated and wide cavities, and may Labbe and Coyne, op. cif. Virchow, op. cit., Chapters on fibroma, sarcoma, and myxoma. Path, und Anat. Untersuchen, p. 126, Berlin, 1852. * From a section of a fibroma, of two years duration, which I enucleatedfrom the upper and outer portion of the left mammary of a single woman,twenty-two years of age. 40 CONNECTIVE TISSUE NEOPLASMS. even contain as mucli as a quart of serous, mucous,lactescent, or sanguinolent fluid. In the majority ofexamples, however, the interstitial or pericanaliculartissue grows or projects into the deformed ducts as Fig. Cystic Fibroma.—Showing transverse and longitudinal sections of dilated andelongated ducts, to the undermost one of which acini are attached, linedby columnar epithelium. variously shaped masses, as the papillaiy, clavate,dendritic, cauliflower, spheroidal, lobulated, or pedun-culated, with broad or constricted bases. They arecovered by glandular epithelium, which is usuaEyround or cuboid, but may be distinctly columnar, andthey may either lie loosely in the cysts, or fill thementirely. These appearances are quite visible to theunaided eye, even in small tumors, or if they are ap- ANATOMY. 41 parently absent, they can be detected on minute ex-amination, as is shown in fig. 2. The microscopic features are coarsely followed in Fig.
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