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Yolk sac tumour arising in mature teratoma in the parapharyngeal space
Author(s)
Nadira Mamoon Department of Histopathology, Shifa International Hospital, Islamabad, Pakistan
Sadaf Ali Jaffri Department of Histopathology, Shifa International Hospital, Islamabad, Pakistan
Fazal Ilahi Department of Histopathology, Shifa International Hospital, Islamabad, Pakistan
Noreen Akhter Department of Histopathology, Shifa International Hospital, Islamabad, Pakistan
Humaira Nasir Department of Histopathology, Shifa International Hospital, Islamabad, Pakistan
Kamil Muzaffar Department of ENT Surgery, Shifa International Hospital, Islamabad, Pakistan
Yasir Iqbal Department of Paediatrics, Shifa International Hospital, Islamabad, Pakistan
Imran Nazir Ahmad Department of Pathology, Shifa International Hospital, Islamabad, Pakistan
Abstract
Yolk sac tumour is germ cell tumour commonly found in children and infants under three years of age in its pure form with a good prognosis. The commonest location for the yolk sac tumour is gonads i.e. testis and gonads. Yolk sac tumour is rarely reported in extra- gonadal locations. Parapharyngeal space is an uncommon site for mature teratoma and very few cases have been reported in adults and children. Malignant transformation in a mature teratoma in the extragonadal sites has been reported but development of yolk sac tumour has not been reported so far in the world literature. We report to our knowledge, the only and first case of yolk sac tumour arising in a mature teratoma presenting as a parapharyngeal mass in a four year old male child. 
Publication Details
Page(s) 1025-1027
DOI DOI not available
Published Journal: Journal of Pakistan Medical Association, Volume: 61, Issue: 10, Year: 2011
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