Hi, my mum has recently been treated for two different types of cancer and we were originally told told it should have all cleared after the neck dissection that she had a couple of weeks ago. However we went to a appointment today and was told that there is a higher risk of still more cancer in three different parts of her neck that still could cause major problems. It worries me so much that the location of the primary source is still not found and that  there will always be this sense of uncertainty as well as the chance that a form of cancer could always suddenly appear? I just don't know what to believe as every doctor is telling us different things