A 40-year-old woman comes to the physician because of a 6-month history of increased facial hair growth. Her last
menstrual period was 4 months ago. She is 165 cm (5 ft 5 in) tall and weighs 70 kg (154 lb); BMI is 26 kg/m2. Her
pulse is 80/min, and blood pressure is 130/82 mm Hg. Physical examination shows temporal balding and coarse dark
hair on the upper lip and chin. Pelvic examination shows clitoral enlargement. Her serum testosterone concentration
is increased. Serum concentrations of androstenedione, dehydroepiandrosterone, and urinary 17-ketosteroids are
within the reference ranges. Ultrasonography of the pelvis shows a 12-cm ovarian mass. Which of the following best
describes this mass?
(A) Granulosa tumor
(B) Ovarian carcinoid
© Sertoli-Leydig tumor
(D) Teratoma
(E) Thecoma