What could be the underlying condition for this child's anomaly? I'll post the correct answer in a few days!
Correct answer: Micrognatia is a sporadic developmental disorder that’s seen in a number of congenital conditions, e.g. Treacher-Collins syndrome and (indeed) Pierre Robin’s sequence. It frequently causes feeding and breathing problems. Luckily however, during growth the mandible can eventually take its (near) normal form. The picture below shows the patient at birth and three years later.