Most common sire for osteoma is:

Craniofacial osteomas are begin 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-female ratio-3:1. Ref .Scott Brown 7/e,Vol 2,p 1521.