A textbook of obstetrics . 7-V THE DECIDUM. 47 cells, which contain nuclei of enormous size. The connectivetissue forms fibrous bands constricting the openings of the uterineglands, as well as the blood-vessels in the diseased membrane ;and yet the whole decidua is exceedingly vascular. In Virchows case there was a syphilitic history, and, therefore, he ascribesthe disease to syphilis ; in other instances no cause whatevercould be discovered, but often this disease, as well as otheraffections of the decidual endometrium, depends upon a pre-existing chronic endometritis. It is a disease of youn
A textbook of obstetrics . 7-V THE DECIDUM. 47 cells, which contain nuclei of enormous size. The connectivetissue forms fibrous bands constricting the openings of the uterineglands, as well as the blood-vessels in the diseased membrane ;and yet the whole decidua is exceedingly vascular. In Virchows case there was a syphilitic history, and, therefore, he ascribesthe disease to syphilis ; in other instances no cause whatevercould be discovered, but often this disease, as well as otheraffections of the decidual endometrium, depends upon a pre-existing chronic endometritis. It is a disease of young ova, andfrequently the chorion villi implanted in the diseased mucous Tub nous projec- Fig. 115.—Tuberous subchorial hematomata of the decidua (Walther). membrane are in a condition of myxomatous Inall the cases hitherto described the ovum has been expelled atthe end of the second to the fourth month of pregnancy (Schroe-der). Polypoid endometritis is closely simulated by bloodextravasations between the decidua and the chorion, as shown infigure I 1 Catarrhal Endometritis.—A chronic inflammation of the de-cidual endometrium will occasionally affect chiefly the glandular 1 Mtiller, Bau der Molen, 1867. 2 Walther, Centralbl. f. Gyn., 1S92, p. 707. 148 PREGNANCY. elements of the membrane, with the result of a hypersecretion of a thin, watery mucus, which, collecting between the chorionand deciduae, may be suddenly expelled, after a rupture of theovular decidua, in the later months of pregnancy. This oc-currence gives rise to sudden gushes of fluid from the vagina,which may reach a pint in quantity. Afterward the fluid maydribble away for a considerab
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