Ossifying fibroma of the frontal bone.
D003937:Diagnosis, Differential; D005260:Female; D005350:Fibroma; D005357:Fibrous Dysplasia of Bone; D005624:Frontal Bone; D005626:Frontal Sinus; D006801:Humans; D008875:Middle Aged; D009078:Mucocele; D010002:Osteitis Fibrosa Cystica; D012888:Skull Neoplasms