Don't know why I am asking on here, but so tired of wrong diagnosis. I had CAT scan with contrast and within an hour after test, my R lung would not fill up with air. I have never been the same since. Went to major hospital pulmonologist and cardiologist and had neuclear stress test, heart echo, sniff test, etc. I was found to have paralysis of the diaphragm. But per their opinion was not caused by CT. I do have asthma but I have NEVER had this. It's been 5 months and the dyspnea continues and still can't breath. I feel like I am going to die from this, because when I exercise, bend over, or in hot/humid weather I smother. OK, give it your best shot. Oh, they also say I have thyroid nodules.