Relax and let Sloan walk you through their explanation of the significance of the node involvement. Doctors really can't tell if the node has cancer or not, so that's why they do so many neck dissections that turn out did not need to be done. All you need to know that the node involvement is not optimal, but hardly fatal as the signatures of many posters proves. Usually the radiation field will include all the nodes on one side and handles the cancer there. It all sounds scary but worrying won't make it any better. We all got through this and your husband should too.
Charm