Craniofacial Fibrous Dysplasia

Fibrous dysplasia is the replacement of cancellous bone components with fibrous tissue containing abnormal bone. Craniofa-cial fibrous dysplasia (CFD) invades two or more craniofacial bones. Treatment options are controversial, and follow-ups are crucial for young patients. Cone-beam computed tomography is useful for evaluation of craniofacial bones. Remaining maxillary sinus volumes can be used as a quantitative value. In this case report, we present two CFD patients with radiologic features. This case report may be a valuable ad-dition to the literature due to the usage of quantitative values to evaluate progression of FD lesions.