. The elements of pathological histology with special reference to practical methods . al germs. (d) Cystic Tumours of New Formation, Cystomata.—These invariablystart from glandular tissue, by the development first of a tissueresembling that of adenomata, in which a formation of cysts after-wards takes place—in which case tlie term adeno-cystoma may alsobe used,—or the process begins with cystic degeneration of the pre-existing cavities of the gland, which is only then followed by thegrowth of the tissue. According as the wall of the cyst is smoothor bears papillary excrescences it is called a
. The elements of pathological histology with special reference to practical methods . al germs. (d) Cystic Tumours of New Formation, Cystomata.—These invariablystart from glandular tissue, by the development first of a tissueresembling that of adenomata, in which a formation of cysts after-wards takes place—in which case tlie term adeno-cystoma may alsobe used,—or the process begins with cystic degeneration of the pre-existing cavities of the gland, which is only then followed by thegrowth of the tissue. According as the wall of the cyst is smoothor bears papillary excrescences it is called a simple cystoma or apapuliferous or proliferous cystoma; and further, either a singlecavity may be present (imilocular tumour), or the tumour may bemidtilocidar. The wall of the cavity consists of fibrous connective tissue moreor less rich in cells (Fig. 46, a), and is coated with a simple epi-thelium composed of cylindrical cells of varying height, frequentlyin a state of mucous degeneration (Fig. 46, c). The contents of thecavity may be either serous, mucous, or i0^0^^^^i0^^^ <:^l:^-:0^^/)fr^:k ^ c Fio. 46.—Cystoma Papilliferum Ovarii, x 77. (Stained with hnematoxylin and eosin.)a, Connective-tissue wall of cysts ; b, Papillary excrescences of the wall; c, Cylindrical epitheliumwith mucous degeneration. In the papuliferous cystoma papillary outgrowths of varying lengthare found on the walls of some or all of the loculi (Fig. 46, h). They CARCINOMA. 101 consist merely of simple or branched invaginations of the wall, andsometimes fill up the entire cavity. If the development of the papilke becomes very luxuriant, andthe latter are covered with several layers of epithelial cells, thetumour approximates to the adeno-carcinoma, and the papillary growthsmay then break through the wall of the cyst, the surface of the organ,or the investing membrane, and even lead to the formation of meta-static growths. 4. (iii.) Carcinoma.—Carcinomata constitute tumours in
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
