Hormones and the pathophysiology of fibrocystic mastopathy: elevated luteinizing hormone levels.

Serum levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), prolactin, testosterone, estrone, and estradiol were measured weekly for 1 month in 12 menstruating women with fibrocystic mastopathy. LH levels were abnormally elevated. The remainder of hormone levels were essentially normal. Elevated serum LH may be secondary to hypothalamic-pituitary, ovulatory, or corpus luteum dysfunction. The roles of hormonal abnormalities in the pathogenesis of fibroycstic mastopathy are not known.