Sublobar Resection for Adenocarcinoma in Situ/Minimally Invasive Adenocarcinoma Diagnosed by Intraoperative Frozen Section (ECTOP-1019)

This study is examining whether a smaller lung surgery (removing just part of a lobe, rather than the whole lobe) is sufficient for patients with very early-stage lung cancer that is confirmed as minimally invasive or non-invasive during surgery. **You may be eligible if...** - You are between 18 and 80 years old - You have an early-stage lung nodule (small, localized, no lymph node or distant spread) - Your nodule appears as ground-glass or mostly ground-glass on a CT scan - The frozen section biopsy during surgery confirms a non-invasive or minimally invasive cancer - You have not previously had lung cancer surgery, chemotherapy, or radiation **You may NOT be eligible if...** - The cancer has spread to lymph nodes or other parts of the body - The cancer is confirmed invasive during surgery - You have had prior lung surgery, chemotherapy, or radiation Talk to your doctor to see if this trial is right for you.