Lung nodule 1cm x 1cm disappeared does not belong to metastasis, it may be benign lesions caused by lung nodules dissipate on their own or remission after drug treatment.
Lung nodule 1cm x 1cm is not necessarily a malignant tumor, it may be caused by benign lesions, such as pneumonia, tuberculosis, etc. Due to the autoimmune function of the organism, the lung nodule may dissipate on its own, or after active anti-infective treatment, the lung nodule due to pneumonia and tuberculosis will gradually subside or even disappear.
Tumor metastasis generally refers to the spread of malignant tumor cells from the primary site to other parts or organs through lymphatic channels, blood vessels or direct dissemination, and generally the primary tumor will not disappear.
If you find that the 1cm x 1cm lung nodule has disappeared, you can consult a professional thoracic surgeon.