Among malignant ovarian germ cell tumours in girls and young women, the most frequent histological subtype is:
- A Yolk sac tumour
- B Dysgerminoma ✓
- C Choriocarcinoma
- D Embryonal carcinoma
Correct answer: B. Dysgerminoma
Explanation
Dysgerminoma is the most common malignant ovarian germ cell tumour, accounting for roughly half of cases, peaking in the second and third decades, and corresponding to seminoma of the testis. It spreads chiefly by lymphatics and is exquisitely radiosensitive. Yolk sac tumour is the second most common and is marked by elevated alpha-fetoprotein, while embryonal carcinoma and pure ovarian choriocarcinoma are distinctly rare.
Reference: Shaw's Textbook of Gynaecology, 17th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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