Just so you know, you don't have to search the "web" to find out about neck dissections. New posters here forget we have hundreds of pages of information, and this message board is only one part of the site. So you are informed about the different types of neck surgeries go here
http://www.oralcancerfoundation.org/facts/neck_dissections.htm At the bottom of every message board page is a link to the home page of the main OCF site.