Diagnostic criteria for bronchogenic lung cancer

Lung cancer is a type of cancer, and this disease is mostly caused by our own reasons, so below we will introduce to you the clinical criteria for judging lung cancer, how we can judge that we have lung cancer, and if we detect lung cancer early, we can treat lung cancer in time.

(a) X-ray negative, sputum negative

1. Asymptomatic patients with three high-risk factors (male, age ≥45 years, and smoking >400 cigarettes/year) should undergo 70-100 mm fluorescent microscopic X-ray or chest fluoroscopy and sputum cytology every six months.

2. Patients with hemoptysis and/or dry cough accompanied by the three major high-risk factors should undergo repeated sputum cytology examinations and receive regular anti-inflammatory treatment; fiberoptic bronchoscopy (bronchoscopy) and video fluoroscopy can be considered. If repeated sputum examinations or microscopic examinations are still negative, they should be reexamined every two months for one year.

(ii) X-ray negative, sputum positive

1. Exclude upper respiratory tract and esophageal cancer

2. Perform bronchoscopy and try to see the sub-sub-segment. If there is any suspicious local mucosal thickening, roughness or blood stains, brush, wash or puncture the bronchial wall mucosa to look for cancer cells. If the local area is uneven or obviously rough, consider taking a bite biopsy.

3. Perform TV fluoroscopy, change body position, and pay special attention to small nodules in hidden areas.

4. If the above examinations fail to find the lesion, sputum, electrodialysis and bronchoscopy should be repeated every two months. CT examination can also be performed, and sub-layering should be performed in suspicious areas. Regular reexamination should continue for no less than one year.

(III) X-ray positive, sputum negative

1. Patients with segmental or lobar pneumonia or obstructive pneumonia and suspected central lung cancer should undergo bronchoscopy, including transbronchial biopsy (TBB), or selective bronchography; and repeated sputum examination should be performed.

2. Local sectional films should be taken for masses or nodules. Transbronchial lung biopsy (TBLB), percutaneous lung biopsy, or aspiration for cytological diagnosis can be performed if conditions permit.

3. Perform sputum examinations at least twelve times continuously.

4. If repeated sputum tests are still negative but X-rays highly suspect lung cancer, exploratory thoracotomy and frozen section biopsy should be performed.

Through the above introduction, we know that through these criteria, we can judge whether we have lung cancer. Because lung cancer is a type of cancer, it also has some common characteristics of cancer, which is more difficult to cure and has a high mortality rate. Therefore, if we find lung cancer earlier, it means that the chance of survival is greater.