[Doubling of the pinna, a rare branchial arch developmental disorder]. / Doppelanlage der Ohrmuschel, eine seltene Kiemenbogen-Fehlbildung.

ABSTRACT

BACKGROUND: Auricular appendices are not unusual, but doubling of the pinna is rare. There is still a controversy if these are derivates from the first or the second branchial arch. PATIENT The case of a 3 year old girl is described with doubling of the pinna and hemi facial atrophia. The second pinna was on third of the orthotop regular auricle. It seemed to come from the tragus anlage i. e. originating from the first otic hillock. RESULTS: The accessory pinna was resected, an aesthetic result could be achieved. CONCLUSION: Morphology and position of accessory pinnas arise again the question of the origin of the auricular hillocks. This case supports the opinion of Otto that the first hillock only belongs to the first branchial arch and the major part of the auricle is originating from the hillock 2-6 i. e. to the second branchial arch.