Growth of a presumed orbital venous anomaly during pregnancy with spontaneous resolution postpartum.

A 27-year-old pregnant woman in her second trimester presented with a 3-month history of gradual proptosis, decreased vision, and choroidal folds in her right eye. MRI revealed an intraconal mass with inhomogeneous enhancement consistent with a vascular lesion. The patient was followed clinically and the lesion remained stable for the remainder of her pregnancy and delivery by Cesarean section. Three months postpartum, the proptosis, choroidal folds, and decreased vision had resolved. Repeat scanning revealed complete resolution of the lesion. Pregnant patients with orbital vascular lesions need to be followed carefully during their pregnancy and after delivery. These lesions can worsen during pregnancy and may resolve spontaneously in the postpartum period.