NCIt definition : A carcinoma arising from the nasopharyngeal epithelium. It includes the following
types: keratinizing squamous cell carcinoma, nonkeratinizing carcinoma (differentiated
and undifferentiated), basaloid squamous cell carcinoma, and papillary adenocarcinoma.;
Alternative definition : NCI-GLOSS: Cancer that forms in tissues of the nasopharynx (upper part of the throat
behind the nose). Most nasopharyngeal cancers are squamous cell carcinomas (cancer
that begins in flat cells lining the nasopharynx).;