My mum was diagnosed with a pancoast tumour a year ago,aftef a long battle with pain and misdiagnosis. Anyway it was terminal, she was offered 5 days palliative radiotherapy which did its job, tumour has not grown since.However she is really declining now,she's not really eating now, or drinking, in bed since Thursday night after she collapsed in the kitchen. She slept 36 hours unresponsive really, I honestly thought she'd pass last night. Today she is talking, walked to the loo, had a wash, a snack and a drink. She is having confused moments, she's also having swollen leaky legs, and a nasty sore. , my question is, what is happening really?