The Korean internet and TV programs are chattering over the comeback of round head plastic surgery. If the back of your head appears flat or un-rounded, look no further than the surgeons of South Korea for a fix. A small cut is made at the back of the head and bone cement is injected to form a rounder surface. This is not a popular surgery, but it’s certainly the most talked about one.
뒷통수– dwit-tong-su – backside of the head
성형 – plastic surgery
뒷통수 성형 – Back of head plastic surgery
More here (in Korean) with pictures.