Treacher-Collins syndrome
Alternate Names : Mandibulofacial dysostosis
Symptoms & Signs
- Outer part of the ears are abnormal or almost completely missing
- Hearing loss
- Very small jaw (micrognathia)
- Very large mouth
- Defect in the lower eyelid (coloboma)
- Scalp hair that reaches to the cheeks
- Cleft palate
Diagnosis & Tests
The child usually will show normal intelligence. Examination of the infant may reveal a variety of problems, including:
- Abnormal eye shape
- Flat cheekbones
- Clefts in the face
- Small jaw
- Low-set ears
- Abnormally formed ears
- Abnormal ear canal
- Hearing loss
- Defects in the eye (coloboma that extends into the lower lid)
- Decreased eyelashes on the lower eyelid
Genetic tests can be done to look for mutations in the TCS1 gene.
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