Hi Anne - I'm so sorry you are having to worry about this but until you know for sure what it is, it's better to try to think of some of the less worrisome reasons for what's happening. I know that's easy to say and not so easy to put in practice. I did just now check with my son and he didn't remember having any bleeding while recovering from his treatment but he was very careful when it came to anything inside his mouth. I know from observing his experience and others on this forum that the tongue can be very tender and it's a good idea to make sure to only use a soft toothbrush and a mild tasting toothpaste. Same goes for mouthwash since anything with alcohol in it could irritate the tongue. Spicy foods or drinking alcohol can also be an irritant to the tongue. Since Gordon's recent Pet scan was clear and you say that the bleeding is minimal, maybe it is not anything really serious. It's good that he has an appointment with the ENT on Monday. It's always better to know for sure what it could be. I'll be thinking of you both and hoping for some good news on Monday. Let us know what happens, ok?