Ive undergone the same operation and it took me a very long time to recover. Overall Im pretty good now. My surgery was Aug 24, 2009 and in some ways Im still working on getting better. It takes one full year for the blood vessels to join together and regrow new ones. Also, the swelling takes a year to completely go away. At your age it will probably be at least 6 months post surgery before you could do any strenuous sports. When I was at the 6 month point, I was still very weak. I was walking a couple miles and back to riding my bike on short trips about 9 months post surgery.

I cant imagine putting a wetsuit or goggles anywhere near the reconstructed area. Ice cold air might not be the best idea either. This is very sensitive new tissue. My original surgery failed and it had to be redone so thats why Im suggesting all the caution. You do not want to go thru this again! Maybe you could get back to your active lifestyle by starting with less strenuous sports. Count your blessings and be happy that your tumor was benign. You are a very very fortunate young man!!!

Its best to always check this out with your doctor.