Both of mine were removed. I did not have radiation afterwards as the cancer had not spread - but they did not know that for certain when they removed them. So, it probably depends on each case - if they think it could have spread, where the actual tumor is, etc....

SCC Right Lateral Tongue T2N0M0 Dx 01/12/06, Surgery 01/25/06. Partial Glossectomy, Bilateral Neck Dissection - 22 lymph nodes - all clear. No radiation.