Very small jaw and chin (called micrognathia).Symptoms of Pierre Robin sequence include: These include Stickler syndrome and Treacher Collins.
This means that if a child has one of these other syndromes, there is a higher likelihood that they might also have Pierre Robin. Some other syndromes are related with Pierre Robin. Sometimes a change in a gene is found that is linked to the sequence. The exact cause of Pierre Robin is unknown. Pierre Robin affects an estimated one in 8,500 to 14,000 people. (Robin is pronounced Ro-BAHN.) It is also referred to as PRS, Pierre Robin, Robin sequence, Pierre Robin syndrome, and neonatal tongue-based airway obstruction. Pierre Robin sequence is named for the French dental surgeon who first identified and researched this sequence of conditions. It can also affect how the roof of the mouth forms, often leading to cleft palate. When this happens, the tongue can block the baby’s airway causing breathing problems. When a baby has a lower jaw that is unusually small, the child’s tongue forms further back than normal. It is called a sequence because one of its features − an undeveloped lower jaw − starts off a sequence of other malformations while a baby is developing in utero. Pierre Robin sequence is a set of abnormalities in a baby that develops during pregnancy.
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