My mum was diognosed with breast cancer 8 years ago, she had a double mastectomy and has been on a form of tomoxofen since. However she started having problems with her bladder this year. For some reason the doctor sent her for a lung ct scan? They found an abnormality and said there was a growth/shadowing in her lung. However they can't do a biopsy because of where it is. They have told her to go back in 3 months to see if it has grown, then they will know if they need to treat it? I'm so worried, could this be secondary cancer?