No careful obstetrician will deny pregnancy solely on the regular occurrence of the menstrual periods, any more than he would make the diagnosis of pregnancy from the fact of the suppression of menses.

Blake reports an instance of catamenia and mammary secretion during pregnancy.

Denaux de Breyne mentions a similar case.

The child was born by a face-presentation.

De Saint-Moulin cites an instance of the persistence of menstruation during pregnancy in a woman of twenty-four, who had never been regular; the child was born at term.
Gelly speaks of a case in which menstruation continued until the third month of pregnancy, when abortion occurred.