How can we detect lung cancer as early as possible? Several common diagnostic methods for lung cancer

X-ray examination can reveal the location and size of lung cancer, and may reveal local emphysema or atelectasis caused by bronchial obstruction, or infiltrative lesions or pulmonary inflammation adjacent to the lesion.

The occurrence of lung cancer is something that none of us want to see. After all, cancer is a disease that causes great harm to people, families and society. Especially for lung cancer, which has an increasing number of patients, it is necessary to pay enough attention to it. Here are some common diagnostic methods for lung cancer:

1. X-ray examination

X-ray examination can reveal the location and size of lung cancer, and may reveal local emphysema or atelectasis caused by bronchial obstruction, or infiltrative lesions or pulmonary inflammation adjacent to the lesion.

2. Bronchoscopy

Bronchoscopes can be used to directly observe the pathological changes in the bronchial lining and lumen. Tumor tissue can be taken for pathological examination, or bronchial secretions can be aspirated for cytological examination to confirm the diagnosis and determine the histological type.

3. Cytological examination

Sputum cytology is a simple and effective method for lung cancer screening and diagnosis. Most patients with primary lung cancer can find detached cancer cells in their sputum. The positive rate of sputum cytology for central lung cancer can reach 70% to 90%, while the positive rate for sputum cytology for peripheral lung cancer is only about 50%.