benign neoplasm of maxillary sinus (MONDO_0021484, a Monarch Disease Ontology term) is a benign neoplasm that involves the maxillary sinus. Also known as: benign maxillary antrum neoplasm, benign maxillary antrum tumor, benign maxillary antrum tumour, benign maxillary sinus neoplasm, benign maxillary sinus tumor, benign maxillary sinus tumour, benign maxillofacial sinus neoplasm, benign maxillofacial sinus tumor.