Hi all,

My 63 year old mum has been diagnosed with Stage 2B non-small cell lung cancer (adenocarcinoma).  She was experiencing pain around her diaphragm in August but just by accident they detected a small shadow in her lung and since then she's been having various appointments (PET scans, biopsy's etc).

She has two tumors in her upper right lobe (20mm x 8mm and 8 x 4mm).  She's a life long smoker unfortunately, but is looking to quit for good now.

The doctor says its operable but is first going to ask her to undergo a stress test on an exercise bike to see if she is fit enough to have the operation.  Does anyone know what this is?  If she fails she will have to undergo radiotherapy instead.  Is the threshold for passing it high?