Treatise on gynaecology : medical and surgical . ^m. Eo U UJ X O. DI- U 1-(0 >- o TUMOKS OF THE VULVA. 407 they are due to tlie fusion of the two layers of the hymen, and hasseen them in the process of formation, resembling a similar cysticdevelopment in the ^^ Vascular Tumoks of the Uehstary Meatus.—As I have en-deavored to demonstrate,^^ the hymen is not an isolated structure,but only the greater portion of a hymeneal api3aratus which com-prises : 1. The masculine frsenum vestibiili. 2. The ring inclosing the urinary meatus. 3. The hymen. If the meatus of a young girl is closely e
Treatise on gynaecology : medical and surgical . ^m. Eo U UJ X O. DI- U 1-(0 >- o TUMOKS OF THE VULVA. 407 they are due to tlie fusion of the two layers of the hymen, and hasseen them in the process of formation, resembling a similar cysticdevelopment in the ^^ Vascular Tumoks of the Uehstary Meatus.—As I have en-deavored to demonstrate,^^ the hymen is not an isolated structure,but only the greater portion of a hymeneal api3aratus which com-prises : 1. The masculine frsenum vestibiili. 2. The ring inclosing the urinary meatus. 3. The hymen. If the meatus of a young girl is closely examinedby drawing the hymen downward, the upward prolongation of thismembrane is clearly seen to surround the external orifice of theurethra by a ring, which forms the superior portion of a figure ofeight, of which the hymen forms the inferior and far larger part; thisupper ring is surmounted by a thin vertical band, the masculinefrsenum, which starts from the meatus and loses itself in the upperthird of the vestibule. This arrangement of the urethra in somew
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