Lung nodules 4.6mm generally do not need surgery, and can be observed for a period of time before deciding on the treatment. For lung nodules of 4.6mm, the size is too small to easily determine their nature through pathological examination, so surgery is not required for the time being. Even if a lung nodule is caused by a malignant tumor, the nature of which cannot be determined at this time, it is not too late to detect it at an early stage of the disease, and it is usually not too late to treat it through close observation for about 3 months, so surgical treatment is not necessary. In addition, tiny nodules are usually caused by inflammation, which can be treated with anti-inflammatory drugs under the guidance of a doctor. When lung nodules are detected, it is recommended that patients seek medical attention in a timely manner to avoid delaying their condition.