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Hemifacial Microsomia — NDEB AFK MCQ

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HardOrthodonticsHemifacial MicrosomiaNDEB AFK

Hemifacial microsomia (first and second branchial arch syndrome) most commonly affects which structures?

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Correct answer: CThe ear, mandible, and soft tissues of the affected side

Hemifacial microsomia (craniofacial microsomia, Goldenhar syndrome when associated with epibulbar dermoids and vertebral anomalies) is the second most common congenital craniofacial anomaly after cleft lip/palate. It results from defective development of the first and second pharyngeal arches, predominantly affecting one side. Features include mandibular hypoplasia (condylar and ramus), microtia/anotia (ear malformation), facial soft tissue deficiency, macrostomia, and facial nerve weakness. Management is multidisciplinary.

Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019