Normal radiographic anatomy and common anomalies seen in cephalometric films.

Lateral and posteroanterior cephalometric radiographs are used routinely in the diagnosis and quantification of dentofacial anomalies that require orthodontic treatment. The anatomic information that these films contain is occasionally overlooked as the clinician prepares tracings and makes measurements. With the increase of the average age of the orthodontic patient population, there is greater likelihood of the presence of disease. This article describes some important features of normal radiologic anatomy of the head and neck so that a clinician can better recognize pathologic changes. Common pathologic findings and anatomic anomalies are also illustrated.