Introduction A.C., a friendly Italian man, received coronary stents 8 years ago and had been feeling well until 3 months ago. He then had progressive breathing difficulty with tightness in his chest. He had loss of appetite and lost 4 kg in that period, but continued to work with good disposition. He had been to two hospital visits, in which he was informed that his lung was normal, based on X-ray. They had not reached final diagnosis, so he came […]