. A manual of gynæcology and pelvic surgery, for students and practitioners. Fig. 231.—The Miillerian tubes have completely failed to fuse. There is adouble uterus and vagina. incomplete the hiatus is at the superior end, so that a septum inthe lower half of the vagina may be present, the upper vagina, 30 466 CONGENITAL ANOMALIES cervix, and uterus being normal; or the septum may extend toand through the cervix, the body and fundus being normal;or the vagina, cervix, and body may be divided, the fundalseptum being incomplete Occasionally one Miillerian duct atrophies or entirely failsto develo
. A manual of gynæcology and pelvic surgery, for students and practitioners. Fig. 231.—The Miillerian tubes have completely failed to fuse. There is adouble uterus and vagina. incomplete the hiatus is at the superior end, so that a septum inthe lower half of the vagina may be present, the upper vagina, 30 466 CONGENITAL ANOMALIES cervix, and uterus being normal; or the septum may extend toand through the cervix, the body and fundus being normal;or the vagina, cervix, and body may be divided, the fundalseptum being incomplete Occasionally one Miillerian duct atrophies or entirely failsto develop, when a one-horned uterus with but one uterine tubeis found. Both tubes may be missing—a rare occurrence—or one maybe normal and the other absent, as in the unicornate uterus. Fig. 232.—Double vagina and cervix. Uterus Bicornis. The Mullerian tubeshave not met at the fundus. Split fundus. mentioned above. One tube may be normal and the otherrudimentary, or a tube may present more than one abdominalostium. THE OVARIES The ovaries are developed from the primitive genital ridgeand not from the Mullerian tubes. They therefore may TREATMENT OF IMPERFORATE HYMEN 467 present anomalies when the other genital organs are perfectlynormal, or the uterus and vagina may be missing, but theovaries be both present and functionating. The ovariesmay be small, imperfectly developed, or absent when theother organs are present, but under such circumstances com-plete development does not take place as the ovarian secre-tion seems to be necessary in order to secure adult developmentand function. The presence of accessory ovaries often has beenassumed in order to explain menstruation and conception afterdouble ovariotomy. The actual occurrence of accessory ovar-ies is practicall
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