Which of the following is the most common benign germ cell tumour of the ovary?

• A Mature cystic teratoma ✓
• B Dysgerminoma
• C Yolk sac tumour
• D Struma ovarii

Explanation

Mature cystic teratoma (dermoid cyst) accounts for the vast majority of benign germ cell tumours and is the commonest benign ovarian neoplasm in women under 30 years. It contains tissue from all three germ layers, most commonly skin, hair and sebaceous material. Dysgerminoma is the commonest malignant germ cell tumour, a completely different category. Struma ovarii is merely a specialised monodermal variant of mature teratoma composed predominantly of thyroid tissue.

Reference: Robbins and Cotran Pathologic Basis of Disease, 10th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.