Which tumor is considered to be analogous to seminoma and typically affects women aged 0-20 years?

Dysgerminoma is considered analogous to seminoma because both tumors are germ cell tumors, which arise from the same type of cells in the gonads (testes for seminoma and ovaries for dysgerminoma). Dysgerminomas primarily occur in young women, particularly in the age group of 0-20 years, making it a common ovarian tumor in this population.

The similarity between these two tumors extends to their histological features and behavior, as both tend to have a similar response to chemotherapy and are associated with increased serum tumor markers, such as human chorionic gonadotropin (hCG) and lactate dehydrogenase (LDH). Additionally, dysgerminomas are characterized by a solid, often lobulated appearance and are composed of primitive germ cells that resemble spermatogenic cells found in seminomas.

The other tumor types listed do not share these specific characteristics or age-related incidence with seminoma. Granulosa cell tumors are sex-cord-stromal tumors, usually occurring in older women. Clear cell tumors and endometrioid tumors are typically associated with the endometrium and are more common in a later age group as well. Therefore, dysgerminoma stands out as the correct answer