“…However, Kashima et al [7] found a female-to-male ratio of 3:1 in their case series, while other researchers have reported ratios of 2:1 [11] or even 1:2 [3]. Although osteomas can develop at any age, they seem to be more common among young adults [2,3,8,12]. Nevertheless, in other studies, higher frequencies of occurrence between the third and fifth decades were reported [7,11,13].…”