“Lung nodule 1.7 advanced” may be missing the unit centimeter after 1.7. Lung nodule 1.7 cm advanced means that the size of the lung nodule is 1.7 cm, but the lung nodule is malignant and the lung nodule has distant metastasis, which is an advanced stage of the tumor. 1. The chance of malignancy of lung nodule 1.7 cm is roughly between 33% and 64%. 2. TNM staging, 1.7cm diameter lung cancer is T1b, and most T1b patients are early or intermediate stage. 3. A small number of T1b lung cancer patients can develop contralateral mediastinal lymph node metastasis or distant organ metastasis to become advanced tumors. Patients with advanced lung cancer with 1.7cm lung nodule generally have poor prognosis, but they can be treated with palliative care, which can not only prolong the survival period of patients appropriately, but also improve the quality of life during the survival period, so it is recommended to go to the hospital for treatment as early as possible.