You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Bilateral germ cell tumour is: and explain in detail?
<p> -Germ cell tumors are common in children and young adults and are derived from primordial germ cells of the ovary. -among germ cell tumors, only dysgerminoma is bilateral (15%). Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no:-282 <\p>