Hemoperitoneum following sexual intercourse in a woman with deep infiltrating endometriosis

Endometriosis is an estrogen-dependent chronic inflammatory disease, defined by the presence of endometrial glands and stroma at ectopic sites. A rare and life-threatening complication associated with endometriosis is represented by spontaneous hemoperitoneum due to the rupture of utero-ovarian vessels. Most cases of spontaneous hemoperitoneum previously described involved pregnant women affected by endometriosis; here, we present a case of acute and massive hemoperitoneum in a nulliparous woman with deep infiltrating endometriosis. When acute abdominal pain with hemoperitoneum occurs in non-gravid reproductive age women, with no positive findings for liver or spleen lesions, a possible spontaneous rupture of utero-ovarian vessels related to the presence of deep infiltrating endometriosis should be included among the possible causes of the condition.