Because of the apparent rarity of this case in which both maxillary antrums were invaded by neoplasm, a careful scrutiny of the literature was undertaken in order to determine whether any such case had been previously reported. During the past twenty years there has been no report of a case of bilateral neoplastic involvement of the antrums. It therefore seems appropriate to describe this unusual occurrence in which a tumor of each antrum was diagnosed, successfully treated and apparently cured thus far. REPORT OF A CASE A man 62 years of age, referred by Dr. A. Leavitt, was seen on Sept. 17, 1940 because he had undergone repeated epistaxis in the past week. A careful taking of the history of the patient failed to reveal any other symptom. Examination showed profuse bleeding from the right naris. The sanguination was sufficiently curtailed by applications of epinephrine hydrochloride to allow for thorough