What's the differennce between chest nodule and intrapulmonary nodule?what's (nodule)smallest size in mm that can be detected by ct scan?

These are common: Lung(pulmonary) nodules are not uncommon when a Chest X-ray or CT scan are done. A majority of these are benign and are a coincidental finding. Once detected they require monitoring or further testing to rule out early lung Cancer. Your doctor can guide you further and may do a PET scan or monitor the nodule with repeat imaging(CT scan) . A CT scan of the lung can pick up nodules of 5mms and abov