Syndromic craniosynostosis and craniofacial disorders — branching viva

Opening question

A three-month-old infant has a tower-shaped head, marked exorbitism with corneal exposure, midface hypoplasia, loud snoring, and severe symmetric syndactyly of all four limbs. What is the diagnosis and its gene, why do the head, face and limb travel together, and what is the one-line problem representation? [1] [7]

Branch 1 — the resuscitation triad

Take the same child. What are your immediate priorities, and in what order? Why must the airway, the exposed eye and the raised intracranial pressure be secured before any cosmetic vault surgery? How would you investigate the airway, and what is the specific threat to the cornea from exorbitism? [3] [7]

Branch 2 — confirming the gene and staging the work-up

Which investigation confirms the syndrome and informs the surgical risk, and why is a targeted FGFR and TWIST1 panel more informative than a chromosome microarray for this pattern? How does mapping every fused suture on three-dimensional imaging change your surveillance for raised intracranial pressure? [9] [1]

Branch 3 — the masquerader

Now a two-year-old re-presents with recurrent coronal fusion, a broad great toe and new sensorineural hearing loss after being labelled nonsyndromic. What is the likely unrecognised diagnosis, its recurrent variant, and what does the evidence show about that variant and reoperation? What safeguard test should have been sent, and what surveillance and counselling did the miss forfeit? [12] [2]

Closing — coordination, inheritance and transition

In one sentence, what is the principle of syndromic craniosynostosis management across the lifespan, and why does the general paediatrician sit at the centre of a multidisciplinary craniofacial team that runs from the infant airway through staged childhood surgery into adult care? What recurrence risk do you counsel, and why must the parents be tested? [7] [9]