Spontaneous hemoperitoneum in a 29-week pregnancy with a history of endometriosis: A case report and review of the literature.

Spontaneous hemoperitoneum in pregnancy (SHIP) is defined as sudden, nontraumatic intraperitoneal bleeding that occurs during pregnancy or up to 42 days postpartum. The incidence ranges between 4 and 4.9 per 100 000 births.