MCQ – 81794

Correct Answer » D Explanation

Clinical Reasoning for the Correct Answer
– Dermoid cysts are mature cystic teratomas, the most common germ cell tumors of the ovary, accounting for about 20% of all ovarian tumors.
– They typically occur in women of reproductive age and contain tissues derived from all three germ layers (ectoderm, mesoderm, endoderm).
– Dysgerminomas are the most common malignant germ cell tumors but far less common than dermoid cysts overall.
– Yolk sac tumors are malignant, rare, and mostly seen in younger females; they represent a smaller proportion of ovarian germ cell tumors.
– Serous cystadenomas are epithelial tumors, not germ cell tumors, and therefore irrelevant here.