Need advice!! Anyone had pleura/lung/pericardium/diaphragm removal?

Hi guys, I need help. My step dad has meothelioma. He was given 7 months to live in February, has had two lots of chemo and has now been told that surgery may be option. His surgeon is one of a handful of surgeons that perform this surgery. It is to remove his lung, pleura, pericardium around the heart and also the diaphragm. I have heard such awful reports about this operation, and a lot of Surgeons refuse to do it. We find out more on Monday but I need help. This operation has shown to worsen people. I need real life stories both good and bad. This is such a massive decision.