Abnormal periauricular region morphology Pretragal ectopia Extra cartilage in front of the ear Pretragal Duplication Variably shaped, cartilage-containing tissue anterior to the external auditory meatus. Pretragal ectopia refers to structures that are frequently complex and should be distinguished from preauricular tags. They may be difficult to distinguish from striated muscle hamartomas or tragal duplications. Pretragal ectopias often appear helix-like, and in such cases may be called Polyotia. UMLS:C0266609 SNOMEDCT_US:204245004