My Husband (almost 75) Had Had 4 Different Cancers In

He had lung cancer (removed, no follow up treatment) , then bladder cancer (bulbous type, remove chem bladder rinse, no follow up) prostate cancer (radiation seeds, follow up tests indicate it was successful). Last month had bladder cancer again, removed, it was "the flat more aggressive type". Going to have 6 weeks of GCB(?) "bladder flush" with medication used for TB, then wait 4 weeks and do another biopsy. He looks terrible. Throughout this, he has had various CT scans, etc. As I read the reports, there is calcification in his heart arteries and "excessive" calcification in the u-shape part of his carotid artery. Today he came home, looks horrible, and complained of swollen ankles and tingling in his feet. I am very worries. As a younger wife, with 3 children. He smoked for way too many years and has COPD (no oxygen). I have noticed a definite change in mood and temperament. I am concerned that the lung doctor is only looking at the lungs and is not responding to the clogged arteries, and the eye doctor (CT scan that mentioned excessive calcification from CT scan is only looking at orbital issues (he fell a couple of months ago- no issues but CT was ordered). I am seeing a bigger picture and that he may die of a stroke or cardiac arrest. What's up with he swollen ankles and tingling? How long does it take to get an opinion? Very concerned working wife and mother, Karen