My mum got diagnosed with small cell lung cancer in may, she's had 5 rounds of chemo and had radio in between.. having finished that she's now having radio to the brain as a precaution. She had a scan in august then another last week, there has been no change in the size of the tumor. I know it's a good thing it isn't any bigger but I was wondering how long it takes to see a result? Does this mean it hasn't worked or do you have to give it time? Thanks x