The multiple variety of osteoma is considered with the diseases of bone.
osteoma—usually the ivory variety—may originate in the wall of the orbit, or may spread from the adjacent sinuses.
Clinically, the osteoma forms a hard, indolent tumour attached to a bone.
Subungual exostosis is an osteoma growing from the terminal phalanx of the great toe (Fig. 107).
osteoma os·te·o·ma (ŏs'tē-ō'mə)
n. pl. os·te·o·mas or os·te·o·ma·ta (-mə-tə)
A benign tumor composed of bony tissue, often developing on the skull.