<prompt> A 20yr old female was diagnosed of granulose cell tumor of ovary.which of the following biomarker would be useful for the follow up of patientCA19-9CA 50InhibinNeurospecific enolase  <response>: Ref Robbins 9e p1032 8e p 1050 Granulosa cell tumor : The most common ovarian tumor That is composed of cells,that stains positively with inhibin The tumor cells may Secrete oestrogen and causes precocious sexual development in girls.Or increase the risk of endometrial hyperplasia and carcinoma in women Less commonly granulosa tumor cells may produce androgen and produce masculinization 