According to the Altman-classification, there are four grades of<unk> : *Grade I: A less than complete development of the external ear with identifiable structures and a small but present external ear canal *Grade II: A partially developed ear (usually the top portion is underdeveloped) with a closed stenotic external ear canal producing a conductive hearing loss. *Grade III: Absence of the external ear with a small peanut-like vestige structure and an absence of the external ear canal and ear drum. Grade III<unk>  is the most common form of<unk> . *Grade IV: Absence of the total ear or anotia.
Microtia
Micromastia
Synechia 
Micropenis
Macrotia
Knuckle pads
Cartilage–hair hypoplasia
Desmoplasia