auriculocondylar syndrome (MONDO_0000107, a Monarch Disease Ontology term) is auriculo-condylar syndrome (ACS) presents with bilateral external ear malformations ('question mark' ears), mandibular condyle hypoplasia, microstomia, micrognathia, microglossia and facial asymmetry. Additional manifestations include hypotonia, ptosis, cleft palate, puffy cheeks, developmental delay, impaired hearing and respiratory distress. Also known as: auriculo-condylar syndrome, question mark ear syndrome.