Verdile records an instance of imperforate vagina in which rectovaginal wall was divided and the delivery effected through the rectum and anus.

Lombard mentions an observation of complete occlusion of the vagina in a woman, the mother of 4 living children and pregnant for the fifth time.

Thus, almost incredible to relate, it is possible for a woman to become a mother of a living child and yet preserve all the vaginal evidences of virginity.

Cole describes a woman of twenty-four who was delivered without the rupture of the hymen, and Meek remarks on a similar case.

We can readily see that, in a case like that of Verdile, in which rectal delivery is effected, the hymen could be left intact and the product of conception be born alive.
A natural sequence to the subject of impregnation without entrance is that of artificial impregnation.