Lung nodule 0.6×0.5cm with clear boundary indicates that the nodule lesion has a clear boundary with the surrounding lung tissues, clear demarcation, no invasion or infiltration of the tissues surrounding the nodule, which is one of the signs of benign. Lung nodules may be formed due to inflammation, tuberculosis, hemorrhage, and other conditions that lead to fibrous hyperplasia and scar formation in the lung tissue. Lung nodule 0.6×0.5cm with clear boundary is considered to be benign nodule, and it is recommended to review it regularly, if there is no obvious change in the nodule, no special treatment is needed. If the nodule becomes bigger and the boundary is not clear during regular checkups, it is recommended that further examination be conducted under the guidance of a doctor to make a clear diagnosis, so as to avoid delaying the condition, which may lead to undesirable consequences.