. Gynecology : . roduction of atretic follicles. Cystic degeneration causes a general enlargement of the ovary, but it doesnot reach the dignity of a tumor until one of the cysts grows at the expenseof the other cysts and the rest of the ovarian tissue. The growth of an atretic follicle cyst may be due to persistence of the lining 384 GYNECOLOGY epithelium which continues to secrete a clear amber fluid (v. Franque). Usually,however, the membrana granulosa disintegrates and disappears. The growthof the cyst is then conditioned on a transudation from the blood-vessels of thetheca interna, which
. Gynecology : . roduction of atretic follicles. Cystic degeneration causes a general enlargement of the ovary, but it doesnot reach the dignity of a tumor until one of the cysts grows at the expenseof the other cysts and the rest of the ovarian tissue. The growth of an atretic follicle cyst may be due to persistence of the lining 384 GYNECOLOGY epithelium which continues to secrete a clear amber fluid (v. Franque). Usually,however, the membrana granulosa disintegrates and disappears. The growthof the cyst is then conditioned on a transudation from the blood-vessels of thetheca interna, which may persist for a long time. As a rule, only one cyst takes on this abnormal growth, though sometimesthere may be two and even three. As the cyst continues slowly to enlarge, therest of the ovarian tissue, including the other follicle cysts, becomes compressed,so that finally it becomes stretched out and incorporated in the thin wall of theusurping cyst, appearing only as a whitish, opaque thickening of the Fig. 135.—Corpus Luteum Cyst of drawing, enlarged, of section of whole ovary. On the right is a corpus luteum show-ing well the plicated envelope of lutein cells. The cavity was filled with cloudy fluid, as in this casethe blood did not organize and we have an early stage of corpus luteum cyst. On the left are severalcorpora lutea which have gone on to the stage of corpus albicans, and at the top one small corpusluteum still in process of organization. The great majority of follicle retention cysts reach a fairly uniform size,about that of the fist. They have a thin translucent wall, usually with no signof epithelial lining. Most of them are monolocular. Some of the follicle cysts grow to a much larger size, even to that of a manshead. The larger cysts are lined with epithelium, and the greater size of thecyst is due to active secretion on the part of the lining epithelium. Folliclecysts of this type cannot, therefore, be regarded properly as reten
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