Germ cell tumour not seen in males:
**Core Concept**
Germ cell tumors arise from the germ cells present in the gonads. These tumors can be benign or malignant and are classified into several types, including seminomas and non-seminomas. The development of germ cell tumors in males is influenced by genetic and environmental factors.
**Why the Correct Answer is Right**
Germ cell tumors in females are typically ovarian in origin and include types such as dysgerminomas, yolk sac tumors, and mature teratomas. In contrast, germ cell tumors in males are primarily testicular in origin. The most common germ cell tumors in males are seminomas and non-seminomas, which arise from the testicular tissue.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify a type of germ cell tumor. Germ cell tumors can occur in both females and males, but the question asks for a tumor not seen in males.
* **Option B:** This option is incorrect as it is a type of germ cell tumor seen in males, specifically a type of non-seminoma.
* **Option C:** This option is incorrect as it is a type of germ cell tumor seen in females, specifically a type of ovarian tumor.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that germ cell tumors can occur in both females and males, but the types and locations of these tumors differ between the sexes.
**Correct Answer: D.**