This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'Most common site for osteoma is: \nSelect and explain. \nA. Maxillary sinus, B. Ethmoid sinus, C. Frontal sinus, D. Sphenoid sinus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Craniofacial osteomas are benign tumors often originating in the paranasal sinuses The frontal sinus is the most frequent location followed by the ethmoid, maxillary and sphenoid sinus, respectively Age of presentation = second to fifth decade with a male-femate ratio - 3:1. Presentation: Generally they are an incidental finding on radiography It may produce symptoms like ? Visual impairment Intracranial neurological complications like meningitis or pneumocephalus with seizure. Management Removal by endoscopic sinus surgery.', 'role': 'assistant'}]