Mandible Hypoplasia


Mandible Hypoplasia is a common feature of Treacher Collins Syndrome (TCS). The mandible is malformed and the angle can be underdeveloped or totally absent. The symptoms are best visible at the facial profile.

Other sypmtoms of TCS:

  • Antimongoloid slanting papebral fissures
  • Lower eye lid coloboma
  • Malformation of auricles
  • External ear canal defect
  • Cleft palate
  • Hearing loss
  • Visual loss
Last modified
30 May 2019

Small lower jaw or jawbone (mandibular hypoplasia) is a frequent feature when the bones of the skull and face (craniofacial bones) are abnormal. Causes are divided in 1...

Rare Condition

Treacher Collins Syndrome

Treacher Collins Syndrome is a genetic disorder characterized by hypoplasia of facial bones (mandible, maxilla and cheek bone), antimongoloid slant of palpebral fissures, coloboma of...


Dysgenesis of the hard and soft tissues of the first...

Micrognathia is a condition in which the jaw is undersized...