In 2006 I had my left lung removed because of a carcinoid tumor. Since the removal of my lung I sometimes experience weird sensations in my left chest, including pressure, mild pain, burning sensations as well as other sensations that are hard to describe.

In the fall of 2011 I had a sudden increase in the intensity and duration of the sensations as well as experiencing sensations I had never felt before. After several visits to the doctor, a stress test and a cardiac catheterization, it was determined that my heart was okay and not the cause and that most likely caused by nerve damage from my surgery. A couple of weeks later my symptoms subsided.

For two years everything has been normal with the occasional weird feeling in my chest that would go away after a few moments. A couple of weeks ago the sensations increased their frequency and intensity, similar to what I experienced in 2011. My question is since I had a cardiac catheterization two years ago that came back negative, can I assume my heart and arteries are still in good shape? Or is there a possibility that my symptoms are a result of CHD which runs in my family?

I'm 49, 6'-3", weigh 220 lbs, get some exercise every day, eat reasonably well, I have never smoked. My last physical in August was good. (Total Cholesterol 126, LDL 75, HDL 36, Triglycerides 76, Glucose 93, BMI 28.5