... delivery, and in some the impregnation seems more marvelous than cases in which the obstruction is only a thin membranous hymen. Often the obstruction is so dense as to require a large bistoury to divide it, and even that is not always sufficient, and the Cesarean operation only can terminate the obstructed delivery; we cannot surmise how conception could have been possible. Staples records a case of pregnancy and parturition with congenital stricture of the vagina. Maisonneuve mentions ... — Anomalies and Curiosities of Medicine • George M. Gould
...
