A benign neoplasm that involves the nasopharynx. The disease is Monarch Disease Ontology entry MONDO_0021478 (benign neoplasm of nasopharynx). Also known as: benign nasopharyngeal neoplasm, benign nasopharyngeal tumor, benign nasopharyngeal tumour, benign neoplasm of the nasopharynx, benign tumor of nasopharynx, benign tumor of the nasopharynx, benign tumour of nasopharynx, benign tumour of the nasopharynx.