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Micrognathia is a malformation characterized by congenital hypoplasia of the mandible. In severe cases, the mandible can be absent (agnathia), which is associated to ventromedial approximation of the lower ears on the front of the neck (melotia or synotia), hypo- or aglossia, and microstomia. The incidence of moderate to severe micrognathia is 1 per 1000 live births. In these cases, this condition can occlude the fetal airway and complicates the establishment of the newborn’s airway after birth. Severe micrognathia that is not previously diagnosed or treated prior to birth can lead to death shortly after birth.

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Micrognathia

  • 章节

  • 发表日期：

    2025年

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  • Edward Araujo Júnior,
  • Eduardo Felix Martins Santana,
  • Gabriele Tonni,
  • Gianpaolo Grisolia,
  • Amy E. Wong,
  • Waldo Sepulveda

摘要

Micrognathia is a malformation characterized by congenital hypoplasia of the mandible. In severe cases, the mandible can be absent (agnathia), which is associated to ventromedial approximation of the lower ears on the front of the neck (melotia or synotia), hypo- or aglossia, and microstomia. The incidence of moderate to severe micrognathia is 1 per 1000 live births. In these cases, this condition can occlude the fetal airway and complicates the establishment of the newborn’s airway after birth. Severe micrognathia that is not previously diagnosed or treated prior to birth can lead to death shortly after birth.