Lung adenocarcinoma 1.6 cm may be stage I, II, III or IV.
Lung adenocarcinoma needs to follow the international TNM tumor staging standard, in which T indicates the size of the tumor, and it is T1 if it is below 3 cm, which means that lung adenocarcinoma 1.6 cm is still in the stage of T1, but it is not known about its lymph node metastasis and distal organ metastasis, so it may be the stage of I, II, or III, IV.
If there is no lymph node, distal organ metastasis and spread, it is stage I. If the patient has metastasis of lymph nodes on the same side, it may be stage II or III; once accompanied by metastasis of lymph nodes and distal organs, it means that the patient belongs to stage IV, that is, advanced stage of lung adenocarcinoma.