<unk>  is a common, benign thickening of the inner side of the frontal bone of the skull. It is found predominantly in women after menopause and is usually asymptomatic. Mostly frequently it is found as an incidental finding discovered during an X-ray or CT scan of the skull.
Hyperostosis frontalis interna
Buccal exostosis
Pachydermoperiostosis
Neuroma cutis
Subungual exostosis
Melorheostosis
Craniosynostosis
Thanatophoric dysplasia