A RARE CASE OF PRIMARY MEDIASTINAL YOLK SAC TUMOUR

Yolk sac tumour is a subtype of germ cell tumour and highly malignant neoplasm. It has been detected in several extragonadal sites in addition to usual presentation at ovaries and testes. Primary mediastinal yolk sac tumour is rare and carries grave prognosis. Here we present a case of 3 year old Female child with hemorrhagic pleural effusion followed by rapid evolution of intrathoracic mass and grossly elevated alpha fetoprotein (AFP) which later turned out to be mediastinal yolk sac tumour.