Congenital ear anomalies and microtia

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Target exams

Red flags

• A newborn with bilateral microtia and a failed or absent newborn hearing screen has bilateral aural atresia until proven otherwise and needs urgent audiology with ABR and early bone-conduction hearing rehabilitation to protect the critical period for speech and language development
• A newborn with bilateral microtia, a small recessed chin (micrognathia) and glossoptosis may have Treacher Collins or Pierre Robin sequence with an obstructed airway; assess the airway first because the tongue base can block the neonatal airway
• An abnormal ear with preauricular pits, branchial neck sinuses or a family history of hearing loss and renal disease raises branchio-oto-renal syndrome; arrange renal ultrasound and audiology because the renal anomaly can be silent until renal failure
• Unilateral microtia with facial asymmetry, a small jaw and vertebral or epibulbar anomalies raises oculo-auriculo-vertebral spectrum or hemifacial microsomia; a missed ear anomaly treated in isolation misses the mandibular, vertebral, cardiac and renal associations
• A misshapen but soft, structurally complete ear in the first week of life is a deformational deformity that is correctable by molding only in the first one to two weeks; reassuring the family that it will resolve on its own loses the narrow molding window and converts a moldable deformity into a surgical problem

Life stages

Care settings

Clinical exam formats

Board mappings

• General Paediatrics and ENT: recognition of congenital ear anomalies, the deformational-versus-malformation distinction, and the newborn hearing screen pathway
• Neonatology and ENT: bilateral microtia with aural atresia as a cause of a failed newborn hearing screen and the need for urgent audiology
• ENT and Craniofacial: the Marx classification, the Jahrsdoerfer CT grading, the nonsurgical molding window, and the autologous and implant reconstruction options
• Development and disability: syndromic microtia (Treacher Collins, hemifacial microsomia, branchio-oto-renal) and the multidisciplinary care pathway
• General Paediatrics: recognition of microtia and aural atresia, the newborn hearing screen, and timely referral to the craniofacial and audiology team
• Communication: counselling families on the molding window, the hearing pathway, and the staged reconstruction across childhood
• Long Case / Structured discussion: a child with microtia and aural atresia, the classification, the hearing pathway, the reconstruction controversy, and the syndromic work-up
• Communication station: explaining the molding window, the bone-conduction hearing option, and the timing and goals of auricular reconstruction
• Level 2 / 3 ENT and Hearing: congenital ear anomalies, microtia classification, conductive hearing loss and referral thresholds
• Patient safety: recognising bilateral aural atresia and syndromic airway risk as the must-not-miss priorities
• Foundation of Practice: the newborn with an abnormal ear, deformational deformity versus microtia, and the syndromic associations
• Applied Knowledge in Practice: the management pathway of ear molding, hearing rehabilitation, and the timing of reconstruction
• History-taking and management: the child with microtia, the hearing pathway, and counselling the family on reconstruction
• Communication: explaining the molding window, the bone-conduction hearing device, and the staged surgical plan in plain language
• General Pediatrics Content Outline, Eye, Ear, Nose and Throat: congenital ear anomalies and microtia, recognition, hearing assessment and referral
• Neonatology and Genetics: distinguishing isolated from syndromic microtia and the multidisciplinary work-up
• Patient Care: recognition and stepwise management of congenital ear anomalies across newborn molding, hearing rehabilitation and reconstruction, with accurate safety-netting
• Systems-Based Practice: timely and equitable access to multidisciplinary craniofacial and audiology services
• Medical Knowledge: pharyngeal-arch and otic-placode embryology, the Marx classification, and the Jahrsdoerfer CT grading
• Medical Expert: microtia classification, the Jahrsdoerfer grading, hearing rehabilitation, and the autologous and implant reconstruction options
• Health Advocate and Collaborator: equitable access to craniofacial and audiology services for remote and Indigenous families
• Communicator: explaining the molding window, the hearing pathway, and the goals and timing of reconstruction