<unk>  is a medical condition and abnormality which involves the downward displacement or retraction of the tongue. It may cause non-fusion of the hard palate, causing cleft palate. It is one of the features of Pierre Robin sequence and Down syndrome.
Glossoptosis
Mandibular fracture
Nasal fracture
Overbite
Laryngotracheal stenosis
Nasal septum deviation
Kynect
Nasal septum perforation