I did a CT scan and I discovered an 18 mm soft tissue speculated nodule in go to GP who recommended a lungs cancer specialist in had an appointment he discovered on there 2 small nodule. I did pet scan and i get confused and worried about because was little radioactivity around my big nodule, doctor said it was very little radioactivity so he recommended to wait 3 month and repeat CT scan to see if nodule grow. Can anyone tell me what its? I have cancer? Doctor said he can't say forget about nodule is a tumour and is too big to no worried about. I am very worried about.