<prompt> Tumor marker of Dysgerminomaa-fetoproteinhCGCA-125Lactate dehydrogenase  <response>: Dysgerminoma is the most common malignant germ cell tumour, accounting for about 30 to 40 of all ovarian cancers of germ cell origin. Placental alkaline phosphatase PLAP and lactate dehydrogenase LDH are produced by up to 95 of dysgerminomas, and serial measurements of LDH may be useful for monitoring the disease. Reference: Berek and Novaks Gynecology; 14th edition; Chapter 37; Ovarian, Fallopian Tube, and Peritoneal Cancer 