Dad had one course of radio and one course of chemotherapy concurrently. They have told him that he cannot have any more radiotherapy as it is so damaging to the healthy tissue, that is why they operated on Monday and want to do the total Glossectomy and Laryngectomy ASAP. With regards to taking so long to give the all clear, that is because it takes time for the treatments to work, then they need to do a number of tests before they can give the all clear. The problem was, with Dad, they gave the all clear when it actually wasn't. They think there were a few cells left over which just grew back twice as aggressively, leaving surgery as the only option. I hope your Mum recovers well from the treatment. One thing I will say though is, speak to your Drs...hassle them even, because they are never forthcoming with information!