(a) Preoperative appearance demonstrating webbed neck deformity of Noonan syndrome; (b) preoperative low and laterally displaced nuchal hairline; (c) anterior appearance one year after surgical correction of pterygium colli with no evidence of anterior displacement of hair-bearing skin; (d) posterior appearance one year after surgical correction of pterygium colli with improved neck contour, improved nuchal hairline, and without evidence of recurrence.