Preauricular cysts Vs first branchial cleft cysts

Simple preauricular cysts should not be confused with first branchial cleft cysts. Branchial cleft anomalies are closely associated with the external auditory canal, tympanic membrane, angle of the mandible, and/or facial nerve. Misinterpreting a first brachial abnormality for a simple sinus tract may place the unsuspecting physician at risk for damaging the facial nerve, incompletely excising the lesion, or both.

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