What is the precursor of early lung cancer?

Symptoms and precursors of early lung cancer mainly include:

1, chest pain. The pain degree of patients with chest pain is different, which depends not only on the severity of the disease, but also on the specific individual quality of patients.

2, coughing up blood. This symptom is mainly caused by tumor cells invading bronchial mucosa.

3. Curved fingers. The common symptom in the early stage of lung cancer may also be clubbed fingers, which means that the first toe section becomes hypertrophy, and the nails also protrude and bend, often accompanied by pain.

4. cough. Cough is the most common symptom, with cough as the first symptom accounting for 35% ~ 75%.

5, sputum with blood or hemoptysis. Blood in sputum or hemoptysis is also a common symptom of lung cancer, accounting for about 30% of the first symptoms.

6, chest pain. Chest pain as the first symptom accounts for about 25%. Often manifested as irregular dull pain or dull pain in the chest.

7. Chest tightness and shortness of breath. About 10% patients take this as the first symptom, which is more common in central lung cancer, especially in patients with poor lung function.

8, hoarse voice. There are 5% ~ 18% lung cancer patients with hoarseness as the first complaint, usually accompanied by cough.

9. Have a fever. The first symptom is 20% ~ 30%. There are two causes of fever caused by lung cancer, one is inflammatory fever and the other is cancerous fever.

10, emaciation, cachexia. In the late stage of lung cancer, loss of appetite caused by infection and pain, and increased tumor growth and consumption caused by toxins can cause severe emaciation, anemia and cachexia.