. The diagnosis of diseases of women . a decidua vera,reflexa, and serotina. The decidua vera is composed of a spongyand compact layer, as in uterine pregnancy. In the compacta thedecidual cells are closely packed together, while in the spongylayer they are separated by gland-like spaces formed by mucousfolds. In later months the distinction between the compact andspongy layers is lost. In the earlier stages the surface epitheliumremains intact, but as time goes on the cilia are lost, the cellsbecome flattened, and, finally, wholly disappear. As in the endo-metrium, the decidual cells are deri
. The diagnosis of diseases of women . a decidua vera,reflexa, and serotina. The decidua vera is composed of a spongyand compact layer, as in uterine pregnancy. In the compacta thedecidual cells are closely packed together, while in the spongylayer they are separated by gland-like spaces formed by mucousfolds. In later months the distinction between the compact andspongy layers is lost. In the earlier stages the surface epitheliumremains intact, but as time goes on the cilia are lost, the cellsbecome flattened, and, finally, wholly disappear. As in the endo-metrium, the decidual cells are derived from the connective tissueof the mucosa. They are essentially greatly enlarged connective-tissue cells, and show great variation in size and form. In far-advanced cases these cells become elongated into a fibrous structure,and loose their decidual character. 158 SPECIAL DIAGNOSIS The decidua serotina, that portion of the decidua known as theplacental site, is relatively larger than is the serotina of the preg-nant uterus. Fig. 48. Hsematoma of the left broad ligament lying close to the uterus. Fig. 49
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