The incidence of facial vessel agenesis in patients with syndromic congenital facial palsy.

BACKGROUND: Congenital facial palsy can result in significant disfigurement. A potential treatment option is free functional muscle transfer to reanimate the face. For this to be possible, a suitable recipient artery and vein must be present in the affected hemiface. In this study, the authors aim to identify whether patients with syndromic congenital facial palsy have a higher rate of facial vessel agenesis than those with isolated congenital facial palsy. METHODS: Patients were identified between November of 2006 and October of 2013. Patients were stratified into two groups: those with syndromic congenital facial palsy and those with isolated congenital facial palsy. The presence or absence of facial vessels was determined intraoperatively. RESULTS: Forty-seven eligible patients were included in the study. Those with syndromic congenital facial palsy were significantly more likely to have an absent facial vein than patients with isolated congenital facial palsy (p = 0.015). There was a strong trend toward those with syndromic facial palsy lacking a facial artery (p = 0.08). Subgroup analysis of patients with Möbius syndrome revealed that these patients were significantly more likely to have facial artery agenesis than those with isolated congenital facial palsy (p = 0.03). CONCLUSIONS: Facial vessel agenesis is significantly more common in patients with syndromic congenital facial palsy compared with those with isolated congenital facial palsy. This must be considered in the preoperative planning for facial reanimation with free functional muscle transfer. The operating surgeon should consider vascular studies of the affected hemiface before undertaking the procedure.