Hi, my dad has had pneumonia recently where they saw a lung nodule on his x-ray that warranted further investigation. He had his CT scan and they have now called him back to discuss. He was informed that it was not good news and he has a 2cm area that looks suspiciously like primary lung cancer - despite having stage 4 prostate cancer. Can I ask can a CT scan alone diagnose cancer? If if it is, what is likely to be his treatment plan given his age (83) and other health issues please? He also has COPD, high BP and cholesterol and borderline diabetes. Thank you.