Winderl L M, Silverman R K
Department of Obstetrics and Gynecology, SUNY Health Science Center at Syracuse, USA.
Obstet Gynecol. 1995 May;85(5 Pt 2):857-60. doi: 10.1016/0029-7844(94)00405-3.
Congenital imperforate hymen is an external urogenital anomaly that has a small differential diagnosis. With careful antenatal sonographic evaluation of the female perineum, identification of a thin protruding membrane consistent with imperforate hymen can be made.
We report a case in which an imperforate hymen was diagnosed in a fetus at 25 weeks' gestation. It appeared as a thin membrane that distended the vagina and spread the labia majora because of retained secretions. An associated renal abnormality was present, representing either a right multicystic dysplastic kidney or cystic dysplasia.
Imperforate hymen and hydrocolpos can be diagnosed as early as the second trimester. Because of the additional renal anomaly in this case, it is suggested that the presence of prenatally diagnosed imperforate hymen warrants a careful survey of the remaining fetal anatomy to rule out associated abnormalities. The possibility of a familial occurrence should be considered, and the appropriate history should be obtained.
先天性处女膜闭锁是一种外生殖器异常，鉴别诊断范围较窄。通过对女性会阴进行仔细的产前超声评估，可识别出与处女膜闭锁相符的薄突出膜。
我们报告一例在妊娠25周时诊断出胎儿处女膜闭锁的病例。它表现为一层薄膜，因分泌物潴留使阴道扩张并使大阴唇分开。存在相关的肾脏异常，表现为右侧多囊性发育不良肾或囊性发育不良。
处女膜闭锁和阴道积水可早在孕中期诊断。由于该病例存在额外的肾脏异常，建议产前诊断为处女膜闭锁时，需仔细检查胎儿其余解剖结构以排除相关异常。应考虑家族性发病的可能性，并获取适当的病史。
