Patient: Enhanced CT showed a round nodule in the dorsal segment of the lower lobe of the right lung, which is suspected to be peripheral lung cancer, but when I went to the hospital for consultation, the doctor suggested that the nature of the tumor should be determined first. What is the best way for me to confirm? Or what other options are there? Also, if it is indeed early stage lung cancer and has not spread, is there any possibility of complete recovery after resection? Thank you very much for your help and I look forward to your reply! Doctor: Hello, this is a very common case, and it is always a difficult problem to obtain pathological evidence for peripheral type of lung cancer in early stage. Bronchoscopy can be performed to check the presence of exfoliated cells. 2, sputum cytology 3, PET-CT examination to see if there is a metabolic increase 4, according to the imaging characteristics to make a preliminary judgment. 5.The patient’s physical condition allows, open chest exploration can be considered. 6.Check whether there are metastatic lesions in common metastatic organs of lung cancer, such as brain, liver and bone. 7.CT-guided puncture