@mbkcanada, dental care is such an important part of health care. Thank goodness your dental hygenist was attentive and suggested that the lump be investigated.

I can't imagine what you and your husband are going through at the moment with both of you in treatment for cancer. You may also wish to join the discussions in the
Head & Neck Cancer support group here: https://connect.mayoclinic.org/group/head-neck-cancer/

It's understandable that you want to keep a close eye and monitor frequently. Different cancers may require different frequency of follow-up appointments and scans. It also depends on how agressive the cancer is etc. etc. Often followup appointments are more frequent during and immediately after treatment, for example, every 3 months and then extended to 6 months and eventually yearly.

Canada has world class cancer centers, such as Princess Margaret Cancer Center and BC Cancer Agency to name just two. If you would like to seek a second opinion at Mayo Clinic, you can submit a request yourself here http://mayocl.in/1mtmR63

Do you have to travel far for daily radiation treatments?