Improving the Intraoperative Diagnosis Accuracy of Invasiveness for Small-sized Lung Adenocarcinoma

This study is developing a better way to determine during lung surgery — while the patient is still on the operating table — whether a small lung tumor is an early invasive cancer or a less aggressive non-invasive type, so that the surgeon can choose the most appropriate extent of tissue removal. **You may be eligible if...** - You are 20–80 years old - You have a small lung tumor (less than 3 cm) that appears to be clinical stage I lung cancer - You have had a CT scan of your chest within 3 months before surgery - The tumor is confirmed to be lung adenocarcinoma after surgical removal - You have not had any prior lung treatment **You may NOT be eligible if...** - Your CT images have significant artefacts that make assessment difficult - You received treatment for the lung tumor before surgery - Your clinical information or imaging files are incomplete - You have a history of other cancers - Your lung cancer is associated with cystic airspaces on CT Talk to your doctor to see if this trial is right for you.