Mild to profound mental retardation in males with large ears with soft cartilage. Complete absence of the auricle. Skin of the cheek passes smoothly over the aural area without definite elevation or depression. Extremely rare, sporadic and usually unilateral. May be associated with facial paralysis and absence of the tonsil on the abnormal side.
Lop ears are usually larger than normal ears.
Autosomal dominant inheritance in some cases. Unusual facies, lop ears, hyperextensible joints, hip dislocation, inguinal hernia with autosomal recessive inheritance. Three images of the ear of a fetus with Townes syndrome 6. Dysplastic ears with hypoplasia, brachycephaly, radiohumeral synostosis, and joint contractures. May be associated with hearing loss and secondary speech disorder.