In your case, etiher surgery or radiation therapy needs to be used. Since it is biopsy positive, you will need active treatment.
Both surgery and radiotherapy have their advantages and disadvantages. The outcomes in early stages are also almost equal. So you need to discuss with your doctor as to what he would recommend.
Usually there is nothing to choose between these two treatments and both can be used with equal rate of complications and equal outcomes.
You can look up here:
http://www.nlm.nih.gov/medlineplus/ency/article/000380.htmI hope this answer was helpful. If you need more information, feel free to ask. For accepting this answer, please click on the green 'accept' button below. Feedback/Bonus will be warmly appreciated.