Treacher Collins

Treacher Collins syndrome (TCS) is a rare genetic disorder characterized by distinctive abnormalities of the head and face. Craniofacial abnormalities tend to involve underdevelopment of the zygomatic complex, cheekbones, jaws, palate and mouth which can lead to breathing and feeding difficulties. In addition, affected individuals may also have malformations of the eyes including a downward slant of the opening between the upper and lower eyelids (palpebral fissures) and anomalies of external and middle ear structures, which may result in hearing loss.

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