A pinna helix sinus: a developmental anomaly

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A preauricular sinus is a common congenital anomaly commonly found anterior to the ascending limb of the helix, resulting from incomplete fusion of the first and second hillocks of His. It presents as a discharging or infected lesion that is managed by surgical excision. We present a previously unreported case of an auricular sinus, located on the margin of the helix adjacent to the antitragus, resulting from incomplete fusion of the fifth and sixth hillocks of His. Whilst different surgical techniques may be used when excising such lesions, the age of the patient, the position and direction of the sinus tract and the potential deformity that can arise in the developing pinna must be taken into consideration.

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