Where is the spot? His original tumor was BOT ? Why would they have to hack? A biopsy is just a small sampling and he's not previously had surgery. a biopsy precursor to potentially more invasive surgery - though if they do go in and remove what they see then they may even get clear margins. I haven't had a radiated area biopsied before but anyone who's had salvage surgery might be able to give you a heads up on the healing time, ultimately, you know your stuff, and with his original ct being clear, two months post treatment, and it not having been PET... I would think its likely been there all along and hopefully just healing or scar tissue, or inflammation... Hugs! God luck Tuesday.