A undifferentiated carcinoma that involves the nasopharynx. The disease is MONDO_0021537 (undifferentiated carcinoma of nasopharynx). Also known as: lymphoepithelioma of nasopharynx, lymphoepithelioma of the nasopharynx, nasopharyngeal lymphoepithelioma, nasopharyngeal nonkeratinizing undifferentiated carcinoma, nasopharyngeal undifferentiated carcinoma, nasopharynx undifferentiated carcinoma, undifferentiated carcinoma of the nasopharynx, undifferentiated nasopharyngeal throat cancer.