title: NON-MALIGNANT EXPANSION OF THE ANTRUM.
mesh_terms: D006801:Humans; D008443:Maxillary Sinus; D009078:Mucocele; D011127:Polyps; D011859:Radiography; D012852:Sinusitis
keywords: MAXILLARY SINUS; MUCOCELE; POLYPS; RADIOGRAPHY; SINUSITIS