title: Primary orbital yolk sac tumour in a 14-year-old girl.
abstract: Yolk sac tumour is a common malignant germ cell tumour, which usually occurs in the testes or ovaries of infants. It can occasionally arise from a number of extragonadal sites. Extragonadal germ cell tumours of the head and neck region account for 5% of all benign and malignant germ cell tumours. The orbit is an extremely unusual location for development of primary yolk sac tumour. The present report concerns the case of a yolk sac tumour in a 14-year-old girl, arising as a primary tumour of the orbit with invasion of periorbital and intracranial spaces.
authors.affiliation: Aga Kahn University, Stadium Road Karachi, Karachi, 74800, Pakistan.
authors.forename: Zubair
authors.initials: Z
authors.lastname: Ahmad
authors.forename: Amna
authors.initials: A
authors.lastname: Khurshid
authors.forename: Asim
authors.initials: A
authors.lastname: Qureshi
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