title: A 28-year-old man with a left-sided palatal mass.
mesh_terms: D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000175:diagnosis / Q000473:pathology*; D012516:Osteosarcoma / Q000175:diagnosis / Q000473:pathology*; D010157:Palatal Neoplasms / Q000175:diagnosis / Q000473:pathology*; D010255:Paranasal Sinus Neoplasms / Q000473:pathology*; D011626:Pterygoid Muscles / Q000473:pathology