• A 20-year-old man had a left parapharyngeal neoplasm that displayed features of sarcoma of the nerve sheath, meningioma with an osseous component, rhabdomyosarcoma, and ganglioneuroma. The diverse cellular population suggests a tumor origin from the ectomesenchymal remnants of the neural crest. The mesenchymal part of the crest would differentiate into a variety of mesenchymal neoplastic elements, and the neuroectodermal (neuroepithelial) portion into the ganglioneuroma. These various neoplastic constituents then would form a neoplasm of mixed mesenchymal and neuroepithelial origin, or an ectomesenchymoma.
(Arch Otolaryngol 106:361-364, 1980)
Shuangshoti S, Chutchavaree A. Parapharyngeal Neoplasm of Mixed Mesenchymal and Neuroepithelial Origin. Arch Otolaryngol. 1980;106(6):361–364. doi:10.1001/archotol.1980.00790300049010
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