Correct answer: Pterygium colli, also called webbed neck, mainly seen in Turner syndrome. I thought this would be a nice change from the regular appaerance of a webbed neck. In newborns, the skin seems to hang loosely around the neck; during growth, this skin is stretched into the common appaerance of a webbed neck. When seeing chldren like this, also check for other signs like widely spaced nipples or low-set ears.