[Agenesis of the sternocleidomastoid].
D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009132:Muscles / Q000002:abnormalities*; D009334:Neck Muscles / Q000002:abnormalities*; D011596:Psychomotor Disorders
L'agénésie des sterno cleido mastoïdiens.