The appearance of the patient affected by cleidocranial dysplasia often is diagnostic. The patients tend to be of short stature and have large heads with pronounced frontal and parietal and bossing. Ocular hypertelorism broad base of the nose with a depressed nasal bridge often are noted. On skull radiographs, the sutures and fontanels show delayed closure or may remain open throughout the patient's life. Secondary centers of ossification appear in the suture line and many wormian bones may be seen. Abnormal development of the temporal bone and tube may lead to conductive or sensorineural hearing loss