Hyperreactio luteinalis with preeclampsia.

Hyperreactio luteinalis (HL) is a condition associated with bilateral and, in rare cases, unilateral ovarian enlargement due to theca lutein cysts. HL is a benign condition, usually found incidentally at cesarean section, which can appear anaplastic and lead to unnecessary ovarian resection. A 24-year-old woman with 35 weeks of gestation attended with bilaterally enlarged ovaries.