Hello, Teresa, how are you?
In answer to your question, no I had no symptoms of anything at all - no coughs, tight chest, shortness of breath - we were regular gym goers in those days and I had no problem with our routines at all and also walked several times a day - and no neuroendocrine symptoms either. So I have no idea how long it would have taken to be detected had we not been given a free chiropractic consultation at a health exhibition and this particular chiropractor liked every new patient to have a full spine - top to bottom - Xray. It was a large almost completely circular mass 3 x 5 x 3 in my right lower lobe. It caused a bit of head scratching as apparently they are quite uncommon - down here at least!