what does a nodule on lungs mean
A larger lung nodule, such as one that's 30 millimeters or larger, is more likely to be cancerous than is a smaller lung nodule. If your doctor detects a lung nodule on an imaging test, it's helpful to compare your current chest X-ray or CT scan with a previous one. If the nodule on earlier images hasn't changed in size, shape or appearance in two years, it's probably noncancerous. In some cases your doctor may recommend annual chest imaging.