A TERATOMA is a tumor composed of tissue derivatives of ectoderm, mesoderm, and entoderm. Tissue differentiation may be mature or immature. The most mature differentiation is represented by parasitic twinning which may be complete or anaplastic. In the field of otolaryngology examples of one extreme to the other have been reported. I1 have presented a detailed anatomic dissection of a polygnathus epignathus, while Ewing2 has referred to a more mature example described by Gross who observed a complete fetus, the size of a finger, in the neck of a woman.
Teratomas of the neck are exceedingly rare. As pointed out by Batsakis et al3 in the most recent report (1964) the subject has seldom appeared in otolaryngologic literature. These authors reported two cases and stated that these plus all the previously reported ones numbered only 87.
The first case recorded in the literature which would seem to
ROSEDALE RS. Neck Teratomas. Arch Otolaryngol. 1965;82(5):535–542. doi:10.1001/archotol.1965.00760010537017
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