The longer the time distance is from the completion of radiation treatment the more of a chance reirridation would be considered is just one aspect for its consideration. I heard of a minimum of 6 months to a year, somewhere along my travels. Although, boost dose Brachtherapy may be given after external beam radiation, in certain cases, a short time thereafter, like a week, in places trained in this procedure.

Surgery is often the first line treatment for a recurrence, with or without radiation, addition of chemo, if not, palliative chemo, targeted therapy, for the time being, as mentioned.

See about a 2nd opinion, and good luck.