A case of Endodermal Sinus Tumor was reported with contralateral dermoid cyst in an unmarried 21 years old woman. Her chief complaint was the progressive enlargement of the abdoment in several last months. There were abnormal results for enlargement of her ovaries with the form of cystic and solid pattern and increased AFP until more than 350 ng/ml (N: 10,9 ng/ml). The patient was then performe…