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A new classification scheme for malignant tumors of the nasopharynx is proposed in which the undifferentiated carcinoma of nasopharyngeal types as a prominent position. This term replaces the previous obsolete term lymphoepithelioma on the basis of its clinicopathologic identity, its separation from squamous cell carcinoma, and its potential origin from anatomical areas other than the nasopharynx.
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Micheau et al. (1978) studied this question.
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