developmental defect during embryogenesis anotia https://www.malacards.org/card/anotia MEDGEN:152377 icd11.foundation:2056675356 GARD:0016835 MONDO:0019780 UMLS:C0702139 Orphanet:93976 ICD9:744.01 MedDRA:10002654 SCTID:57436000 A congenital malformation of the external ear and the most extreme form of microtia characterized by the complete absence of the external ear and auditory canal, conductive hearing loss, attention deficit disorders and delayed language development. otorhinolaryngologic disease