My beautiful 55 year old mum was diagnosed with stage 3 lung cancer in March this year. Eventually after 3 biopsies and and several rigid bronchoscopies they referred her to Immunotherapy (Pembrolizumab) every 3 weeks for 2 years. She has now had 4 treatments however her first scan came back that the tumour has 'marginally grown'. They also said she now has enlarged lymph glands in the centre of her chest and they are unsure as to whether this is a new cancer or an infection. What I can't seem to find out is if it is normal for the tumour to grow after only 4 treatments (3 at the time of the scan). Obviously I am panicking and going to the worst place but I am so frightened they are going to say that they are taking her off any treatment. Does anyone have any advice on whether it can take longer than 3 months before is starts shrinking?
