A 72-year-old postmenopausal woman with high plasma testosterone level
s and virilization, as demonstrated by hirsutism and balding, is prese
nted. Urinary 17-ketosteroids and 17-hydroxycorticosteroids, as well a
s computed axial tomography scan of the adrenal glands were normal. Al
though no pelvic mass was detected by ultrasonography or pelvis examin
ation, the patient was found to have small bilateral hilus cell tumors
of the ovary. Following bilateral salpingo-oophorectomy the plasma te
stosterone dropped to normal level. This is the third case of bilatera
l hilus cell tumors of the ovary to be reported.