Negative margin of surgical resection for lung cancer means that the pathologic report of lung cancer resected material suggests that the cancerous lesion has been completely resected.
Lung cancer is a malignant tumor, which can have lymph node metastasis and distant metastasis. Early stage lung cancer (e.g. TNM stage I and II) is mainly treated by surgery, while stage II-III patients should be combined with radiotherapy and chemotherapy at the same time. The treatment of advanced lung cancer mainly relies on chemotherapy and targeted therapy.
Surgical treatment for early stage lung cancer can usually achieve curative effect, anatomical lobectomy and lymph node dissection are preferred, there are local resection and extended resection, and complete resection of cancerous foci should be ensured in either surgical way.
In order to achieve the goal of complete resection, part of the surrounding normal tissue should be appropriately resected in addition to the edge of the cancerous lesion, and the scope should be decided according to the degree of differentiation of the cancer and the location of the cancer, and pathology should be sent to the patient during the operation, and the result of the examination shows that the cancerous cells at the edge of the resected area are negative, which means that the cancerous lesion has been completely resected.