Ko. Devaney et A. Ferlito, YOLK-SAC TUMORS (ENDODERMAL SINUS TUMORS) OF THE EXTRACRANIAL HEAD AND NECK REGIONS, The Annals of otology, rhinology & laryngology, 106(3), 1997, pp. 254-260
Yolk sac tumors (or endodermal sinus tumors) are rare neoplasms of ger
m cell origin that have been reported in gonadal sites (testis and ova
ry). Extragonadal yolk sac tumors are uncommonly seen, and in particul
ar,they are rare in the extracranial head an neck regions; we found 27
well-documented cases in the English-language literature. We discuss
their clinical and pathologic features.