A benign neoplasm that involves the trachea. The disease is Monarch Disease Ontology id MONDO_0021517 (benign neoplasm of trachea). Also known as: benign neoplasm of the trachea, benign trachea neoplasm, benign trachea tumor, benign trachea tumour, benign tracheal neoplasm, benign tracheal tumor, benign tracheal tumour, benign tumor of the trachea.