Abstract
Chcrubism in a six-year-old Japanese girl is presented. The patient demonstrated painless swelling in the right angle region of the mandible at age three years, and swelling appeared in the left at the age of four. Radiographic examinations of the mandible revealed bilateral multilocular areas of increased radiolucency, loss of the tooth germs of the bilateral second molars and absorption of the distal roots of the bilateral first molars. Histopathological diagnosis of the lesion was giant cell granuloma of the jawbone. Familial examinations showed that her father had a bilateral and symmetrical bone protrusion in the frontal region.
