Scientific Analysis of Lung Tumor Diagnosis Methods

Lung tumor is the most common primary lung malignant tumor. Most lung tumors originate from the bronchial mucosal epithelium, so they are also called bronchial lung tumors. What are the diagnostic methods for lung tumors? Let's analyze them in detail.

Sputum exfoliative cytology is a method for diagnosing lung tumors. It 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 shadows in the lungs or unexplained hemoptysis.

Percutaneous lung puncture cytology is a method for diagnosing lung tumors. It is suitable for peripheral lesions that are not suitable for thoracotomy for various reasons, and other methods have failed to establish a histological diagnosis. Currently, it tends to be combined with CT using a fine needle, which is safer to operate and has fewer complications.

Serum tumor markers in the diagnosis of lung tumors. Many serum tumor markers related to lung cancer have been found. These markers may indicate the enhancement of carcinogenic factors or the degree of "detoxification" of certain carcinogens. Serum tumor markers for lung cancer may become valuable indicators for tumor staging and prognosis analysis, and can be used to evaluate the effectiveness of treatment. The results of tumor marker tests must be combined with other test results and cannot be used alone to diagnose cancer.

Thoracic puncture cytology is a method for diagnosing lung tumors. Patients suspected or diagnosed with lung cancer may have pleural effusion or pleural metastasis. The analysis of cells extracted from the pleural effusion by thoracentesis can clarify the stage and, in some cases, provide a basis for diagnosis.

Lung tumor diagnosis method: scalene muscle and supraclavicular lymph node biopsy. For lung cancer patients, routine biopsy cannot palpate the scalene muscle or supraclavicular lymph nodes, and metastasis is rarely found. For patients with palpable supraclavicular lymph nodes, the diagnosis rate is nearly 90%.

Lung tumor diagnosis method: monoclonal antibody scanning. The use of monoclonal antibodies for screening, diagnosis and staging is currently a field of experimentation. Immunofluorescence imaging of anti-carcinoembryonic antigen MoAb labeled with radioactive substances has been reported. Currently, 111In or 99Tc are generally used for labeling. 73% of primary tumors and 90% of secondary tumors absorb radioactive labeled antibodies, respectively. Absorption of antibodies is also affected by the size and location of the tumor.

The above is an introduction to the diagnosis methods of lung tumors. Experts suggest: If you have symptoms of lung tumors in your health, do not delay diagnosis and go to a regular hospital for some relevant examinations in time.

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