What tests are needed to diagnose lung cancer? Three tests are necessary to diagnose lung cancer

Lung cancer is a malignant lung tumor that can cause unimaginable harm to our health. Therefore, prevention is particularly important. If you feel unwell, you should go to the hospital for examination in time. So what examinations are needed to diagnose lung cancer?

What tests are needed to diagnose lung cancer:

1. Sputum exfoliative cytology is simple and easy to perform, but the positive detection rate is only 50% to 80%, and there is a 1% to 2% false positive rate. This method is suitable for general screening in high-risk groups and for the diagnosis of isolated lung shadows or unexplained hemoptysis.

2. Percutaneous lung puncture cytology is suitable for peripheral lesions and is not suitable for thoracotomy cases for various reasons. Other methods have not been able to establish a histological diagnosis. Currently, CT-guided fine needle puncture is safer to operate with fewer complications. The positive rate is 74% to 96% in malignant tumors, while it is lower at 50% to 74% in benign tumors. Complications include pneumothorax 20% to 35% (about 1/4 of which require treatment), small amount of hemoptysis 3%, fever 1.3%, air embolism 0.5%, and needle tract implantation 0.02%. Thoracic surgery is less used because it has thoracoscopy, thoracotomy and other means.

3. Patients suspected or confirmed of lung cancer by thoracentesis cytology may have pleural effusion or pleural metastasis. The cell analysis of pleural effusion extracted by thoracentesis can clarify the stage and provide a basis for diagnosis in some cases. For lung cancer with pleural effusion, bronchopulmonary adenocarcinoma has the highest detection rate, and its positive rate of cytological diagnosis is 40% to 75%. If the cytological analysis of the pleural effusion obtained by puncture cannot make a diagnosis, further examination methods such as thoracoscopy can be considered.

I believe that after reading the above introduction, you have a certain understanding of what tests are needed to diagnose lung cancer. In daily life, you should learn more about lung cancer, take early prevention measures, always pay attention to changes in your physical condition, and not give lung cancer any chance to occur in yourself.