On Friday, my stepfather had a seemingly successful operation to remove his lung which had an 8cm cancerous tumour on it. He came out of intensive care yesterday and the doctor said he was doing really well. Unfortunately, I've just heard that he's been rushed back into intensive care with 'serious complications' - irregular heartbeat and heart beating too fast. We're obviously all very worried. Wondered if anyone has had any experience of this and what the outcome was - good or bad - would rather know all possibilities so I can be ready to support my mum. Thanks.