A benign or malignant neoplasm affecting the nasopharynx. Representative examples of benign neoplasms include angiofibroma and squamous papilloma. Representative examples of malignant neoplasms include keratinizing squamous cell carcinoma and nonkeratinizing carcinoma. The disease is Monarch Disease Ontology entry MONDO_0005375 (nasopharyngeal neoplasm). Also known as: nasopharyngeal neoplasms, nasopharyngeal tumor, nasopharyngeal tumour, nasopharynx neoplasm, nasopharynx neoplasm (disease), nasopharynx tumor, nasopharynx tumour, neoplasm of nasopharynx.