Ovarian Hyperstimulation Syndrome Due to a Mutation in the Follicle-Stimulating Hormone Receptor

Abstract
The ovarian hyperstimulation syndrome most often occurs as an iatrogenic complication of ovarian-stimulation treatments for in vitro fertilization (the incidence of severe forms ranges from 0.5 to 5 percent).1 The clinical manifestations vary from abdominal distention and discomfort to potentially life-threatening, massive ovarian enlargement and capillary leak with fluid sequestration in a third space.2 Although the presence of human chorionic gonadotropin is invariably associated with the condition, the pathophysiological mechanism remains undefined.3