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Polycystic ovary syndrome — DRCOG MCQ

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EasyGynaecologyPolycystic ovary syndromeDRCOG

A 23-year-old woman has oligomenorrhoea, acne and unwanted facial hair. Pregnancy test is negative and thyroid function is normal. Pelvic ultrasound shows polycystic ovarian morphology. What is the most likely diagnosis?

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Correct answer: D — Polycystic ovary syndrome

Oligomenorrhoea with clinical hyperandrogenism and polycystic ovarian morphology is typical of PCOS after excluding mimics such as pregnancy and thyroid disease. Premature ovarian insufficiency more often presents with hypoestrogenic symptoms and raised FSH. Endometrial cancer is unlikely at 23 without abnormal heavy or postmenopausal bleeding, though long-term anovulation increases risk. PID would usually cause pelvic pain or discharge.

Reference: NICE CKS PCOS; International PCOS guideline