Frontal recess osteoma causing severe headache.

Frontal sinus osteomas are benign and well-defined masses that may cause various symptoms when they press on the surrounding tissues. Paranasal sinus osteoma is seen as a well-defined mass showing high opacity in Computed tomography. In this case study, we presented here a 53-year-old frontal recess osteoma with severe headache filling the left frontal recess in the context of the literature.