What are the types and symptoms of lung cancer? The four most common symptoms of lung cancer

If you have the habit of smoking, it is best to quit smoking after reading the following content, because according to statistics, people who have the habit of smoking are more likely to have symptoms of lung cancer than others. Moreover, due to the large number of types of lung cancer, many people have lost their lives before their lung cancer condition is clearly diagnosed.

What are the types and symptoms of lung cancer?

Although lung cancer can occur anywhere in the lungs, it always develops along the bronchi, so it is also called bronchial cancer. It is usually divided into the following types:

① Lung cancer of the hilar bronchial trunk, with an incidence rate of 80%, is an epidermoid cell carcinoma composed of squamous cells, also known as large cell carcinoma. It has a low degree of malignancy and is related to smoking.

② Medium-sized bronchial lung cancer is less common.

③ Lung cancer at the edge of the lung usually occurs in the small bronchus, and is more common in adenocarcinoma, which is a columnar epithelial cell carcinoma, develops slowly, and has nothing to do with smoking. The other type is small cell lung cancer, which is derived from the metaplasia of small cells at the base of the bronchial mucosa, also known as undifferentiated cell carcinoma, which is highly malignant and easily confused with adenocarcinoma.

④ Distal bronchoalveolar carcinoma, also known as alveolar cell carcinoma. Because the alveoli are invaded by the tumor, the patient has difficulty in breathing. This type is extremely rare, highly malignant, progresses rapidly, and has a very poor prognosis.

Common symptoms of lung cancer include cough, hemoptysis, chest pain, and easy combination of lung infection and inflammation, weight loss, shortness of breath, hoarseness or aphonia. The above symptoms may be present to some extent, but not all of them may be present. However, it is worth pointing out that the severity of the symptoms caused by lung cancer and the early or late discovery mainly depend on the location of the disease. If the disease grows in the hilum of the trachea, the symptoms are severe and appear early. If the tumor grows in the trachea or its distal end, and is located at the edge of the lung, the symptoms are mostly mild or even absent.