What are the clinical manifestations of lung cancer? Three symptoms suggest the occurrence of lung cancer

The lungs are the human body's respiratory organs. They are located in the chest cavity, one on each side, covering the heart. Lung cancer can occur for certain reasons, which can affect human health and, in severe cases, can even cause death. Lung cancer has many clinical manifestations.

The occurrence of lung cancer is inseparable from smoking. Studies have shown that the chance of long-term heavy smokers suffering from lung cancer is 20 times higher than that of non-smokers. The younger the age of smoking, the higher the risk of lung cancer. Air pollution and lung infection can also cause lung cancer. So what are the clinical manifestations of lung cancer?

1. There are many clinical manifestations of lung cancer. The first is cough, which is the most common symptom. Thirty to seventy-five percent of patients have this as the first symptom. The cause of the cough may be related to changes in bronchial mucus secretion, obstructive pneumonia, atelectasis and other intrathoracic complications. It is generally a paroxysmal irritating dry cough, which is often not easy to control even with cough suppressants.

2 There may also be blood in the sputum or hemoptysis. This is because the tumor tissue has a rich blood supply and a relatively brittle texture. During severe coughing, the blood vessels will rupture and cause bleeding. Coughing up blood may also be caused by local tumor necrosis or vasculitis. It is generally intermittent or continuous, and there will be blood in the sputum or a small amount of hemoptysis repeatedly. There may also be symptoms of chest pain, which is often manifested as irregular dull pain or dull pain in the chest and is not easily controlled by drugs.

3. Finally, lung cancer can also cause patients to experience chest tightness and shortness of breath. % of patients experience this as the first symptom, which is more common in central lung cancer, especially in patients with poor lung function. In more severe cases, breathing will become difficult and cyanotic. The patient's voice will also become hoarse because the cancer invades and compresses the nerves that control the vocal cords. It can occur suddenly, progress rapidly, and may even lead to complete loss of voice.

These are the clinical manifestations of lung cancer, so patients with these symptoms should go to the hospital for examination in time, especially those with a history of smoking and lung disease, so as to avoid more serious consequences. If it is confirmed to be lung cancer, they must cooperate with the doctor for treatment in time to reduce the mortality rate.