Inversion of the uterus is one of those extremely rare conditions which only a few surgeons have seen. When one is confronted with this situation, it becomes a very real problem. The case in point will illustrate some of the pitfalls in the diagnosis and will, I trust, be helpful to those who are yet to encounter this condition in which the uterus is upside down and inside out.
It is not my intention to discuss the vexed question of the etiology, but it is of interest to note that, of 641 cases of inversion of the uterus compiled from the literature by Thorn1 from the entire world, 81.2 per cent, were obstetric in origin, 13 per cent, were due to uterine tumors, 2.2 per cent, occurred postmortem, 2 per cent, were idiopathic, and 1.6 per cent, occurred after abortions or premature labors.
In the obstetric group, the rarity