Ovarian torsion caused by hyperreactio luteinalis in the third trimester of pregnancy: a case report.

In this case report, a rare case of an adnexal torsion caused by hyperreactio luteinalis (HL) in the third trimester is described, since adnexal torsions are mainly restricted to the first trimester of pregnancy. In an emergency Cesarean section, the patient gave birth to a healthy female baby weighing 3,300 g and we found an enlarged benign multiple luteinized follicular cyst mass in the right adnexum, which led to an adnexal torsion. After detorsion, both ovaries recovered to their normal sizes two months after the intervention.