Which disorder is characterized by a hormonal imbalance producing multiple cysts on the ovaries?

• A. Polycystic ovary syndrome (PCOS)
• B. Endometriosis
• C. Ovarian cancer
• D. Fibroids

Answer: (A)

Polycystic ovary syndrome (PCOS) is characterized by a hormonal imbalance that leads to the formation of multiple cysts on the ovaries. This condition often involves an elevation in androgens, which can cause irregular menstrual cycles, weight gain, excessive hair growth, and acne, among other symptoms. In PCOS, the ovaries may develop many small fluid-filled sacs (cysts), which can be identified through ultrasound imaging. The hormonal imbalance associated with PCOS typically involves insulin resistance, contributing to its diverse clinical presentation.

Endometriosis primarily involves the growth of endometrial tissue outside the uterus and is associated with pelvic pain and infertility but does not typically cause multiple ovarian cysts. Ovarian cancer involves the malignant growth of cells in the ovaries and may present with cysts, but is not primarily defined by a hormonal imbalance. Fibroids, or uterine leiomyomas, are noncancerous growths in the uterus that can cause heavy menstrual bleeding and pressure symptoms but do not typically involve cyst formation on the ovaries or hormonal imbalances related to PCOS. Therefore, the defining features of PCOS clearly differentiate it as the correct choice for this question.