Osteoma of the lesser wing of the sphenoid.
D000328:Adult; D006801:Humans; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis*; D010016:Osteoma / Q000175:diagnosis*; D011859:Radiography; D012886:Skull / Q000000981:diagnostic imaging; D013100:Sphenoid Bone