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 Which of the following is FALSE regarding the endodermal sinus turmor: and explain in detail?
Endodermal sinus tumor (yolk sac tumor) Unilateral & mostly observed between 15-20 yrs of age. Median age of presenation is 16 - 18 years. Its the third most common malignant germ cell tumor of the ovary (most common germ cell malignancy is Dysgerminoma) The characteristic histological feature-Schiller-duval body is seen in EST Most tumors produce Alpha feto protein and rarely Alpha1 antitrypsin. AFP is used for monitoring patient response to treatment. Treatment of choice- Surgical staging and Unilateral Salpingo-oopherectomy All patients have to be treated with adjuvant or therapeutic chemotherapy