Worried dad//3Yr Old with PWS

[sergeant7x]

Hi all,
First time posting.....My 3 yr has a PWS that only covers part of his left cheeck. The stain doesnt overlap on any other feature of the face or eyes. we visited a dermatalogist who told us the stain had a high risk of becoming cancerous and he recommended we see a Plastic surgean to have it removed. I thought the Plastic Surg would recommend laser treatments but as it turns out he wants to surgically remove the stain. he then will use an an adjacent piece of his cheek to stretch over the entire area.
this all seems so invasive to me but i know almost nothingon the matter. your opinions comments and information would greatly help this sad dad.