What are the symptoms of lung cancer? Five symptoms are the most common manifestations of lung cancer

Lung cancer is a disease that is very harmful to the human body. It is not easy to cure and is prone to recurrence, which seriously affects the patient's normal work and study. In order to reduce the harm caused by lung cancer to patients, we must understand the specific symptoms of lung cancer and do a good job of timely treatment to avoid missing the opportunity for treatment. Let's take a look at the clinical symptoms of lung cancer.

① Cough: It is the most common symptom, affecting about 2/3 of patients. It can be a mild dry cough or a severe cough, with varying amounts of sputum. However, in patients with chronic long-term coughs, if the nature of the cough changes, or the frequency of coughing changes or the cough occurs at night, be alert to lung cancer. A persistent, uncontrollable cough is one of the most painful symptoms of lung cancer.

②Chest pain: 30% to 40% of patients experience pulmonary chest pain, which is generally intermittent and severe chest pain. It manifests as dull pain or drilling pain, which can last from minutes to hours. If the tumor invades the pleura, the pain will be more severe, continuous and fixed. If chest pain recurs in early lung cancer, the prognosis is poor if the pain recurs later.

③ Coughing up blood: Nearly half of lung cancer patients have this symptom. If a smoking man over 40 years old has blood in his sputum, blood streaks or small blood clots, the possibility of lung cancer is very high. This is also one of the early symptoms of lung cancer.

④ Fever: Most of the fever of lung cancer is caused by inflammation due to bronchial obstruction and poor drainage caused by cancer. In patients with large tumors, necrosis occurs in the inflammatory center, and sometimes there is a remittent fever every day for several months. Once the tumor is removed, the body temperature returns to normal immediately. Lung cancer patients have no obvious inflammation in their bodies, but they have obvious fever, which is often caused by the tumor itself, the so-called "cancer fever", and the body temperature is often below 38°C. Male smokers over 45 years old who have long-term lung inflammation and fever and whose treatment is not effective should be especially alert to the possibility of lung cancer.

⑤ Chest tightness and shortness of breath: In addition to tumors blocking the bronchus and causing atelectasis and lung inflammation, which can also cause chest tightness and shortness of breath, it is generally more obvious in the late stages of lung cancer, especially when there is a large amount of pleural effusion.