MSFinals-1683

A 30-year-old married woman has been struggling with infertility for a while. Upon undergoing an ultrasound, it was discovered that her ovaries are enlarged. She has also been experiencing scant or absent menses, but her external genitalia appears normal. Additionally, she has gained weight without explanation and developed hirsutism. Hormonal tests indicate decreased follicle-stimulating hormone (FSH) and increased luteinising hormone (LH), increased androgens, and undetectable beta human chorionic gonadotropin. What is the most likely cause of her condition?