Monarch Disease Ontology entry MONDO_0006850 (maxillary sinus neoplasm) is a benign or malignant neoplasm that affects the maxillary sinus. Representative examples of benign neoplasms include Schneiderian papilloma and salivary gland-type adenoma. Representative examples of malignant neoplasms include carcinoma and lymphoma. Also known as: maxillary antrum neoplasm, maxillary antrum tumor, maxillary antrum tumour, maxillary sinus neoplasm (disease), maxillary sinus tumor, maxillary sinus tumour, maxillofacial sinus neoplasm, maxillofacial sinus tumor.