My only symptoms were shoulder pain and what I thought was indigestion. The pain was like a slight sprang. Neither one was severe. The shoulder pain was what I thought was from playing golf. I noticed when I played golf again that none of my moves agitated the pain, so I concluded that it was not from golf. Because of this pain and the slight indigestion, I requested a chest x-ray when I had my annual physical. They had just told me how healthy I was. They did do the x-ray at my request and then that is when we found the pleural area full of fluid. The cancer could not be seen till I had a CT scan, because the fluid was blocking it. If you have any doubt about what your problem is, I would recommend an X-Ray and a CT scan. After my diagnoses my daughter had a CT scan just to be safe, I hope this helps some.
Stay positive,
Ernie