This is of very rare occurrence. The uterus, which is generally somewhat enlarged, is turned inside out, either by its own contraction or by the exercise of traction on its fundus. These conditions are best fulfilled during or after parturition, especially when the umbilical cord is pulled on while the placenta is adherent. It may also occur in connection with a tumour growing inside the uterus and attached to its internal wall. The inverted uterus projects from the vulva as a bleeding mass, the haemorrhage being frequently so severe as rapidly to cause death. If the patient survive and the organ is not restored, inflammation results, and the uterus acquires attachments in its new situation, so that resort has sometimes to be had to amputation.