Do patients with lung cancer have no symptoms in the early stages? What are the main types of lung cancer?

Lung cancer is a relatively common type of lung disease. About 30% of patients have no symptoms in the early stage, such as adenocarcinoma. Other types of lung cancer, such as squamous cell carcinoma and alveolar carcinoma, are often accompanied by symptoms such as hoarseness, fever, hemoptysis, and cough, so that patients can realize that they are troubled by the disease as soon as possible and go to the hospital for examination as soon as possible.

Lung cancer is a type of lung disease with a relatively high incidence rate. Once the disease occurs, it is easy to threaten the patient's life safety. Therefore, for lung cancer, everyone should respond to treatment as soon as possible after being diagnosed with it. Experts on lung cancer said that clinically, about 30% of patients have no obvious symptoms in the early stage, but most of them will have some abnormal manifestations. Therefore, everyone should learn more about the early symptoms of lung cancer and the specific classification of lung cancer, so that they can diagnose and respond to the disease in the shortest time.

Pay attention to several early signs of lung cancer

1. Hoarseness

This is the most obvious symptom of people suffering from lung cancer. Although hoarseness is common in various diseases such as pharyngitis and colds, it is generally mild and can heal on its own. However, hoarseness induced by lung cancer and thyroid cancer is different, especially in lung cancer.

This is the most important early feature of lung cancer and also a new discovery explored by experts at home and abroad in recent years.

2. Fever

When central lung cancer deteriorates to the point of semi-obstruction or complete obstruction of the lumen, it will induce obstructive pneumonia. The patient's fever usually remains at around 38°C and can usually be relieved after anti-inflammatory treatment.

3. No symptoms

About 30% of patients have no obvious symptoms in the early stages and can only be detected by going to the hospital for lung-related examinations.

4. Coughing up blood

Except for patients with central lung cancer who do not experience coughing up blood until the middle stage of the disease, patients with other types of lung cancer have symptoms of coughing up blood in the early stages.

How is lung cancer classified clinically?

1. Squamous cell carcinoma: Squamous cell carcinoma is a common type of lung cancer. It often originates from large central bronchial lung cancer. Compared with other types of lung cancer, this type of lung cancer develops more slowly and the patient has a longer course of illness.

2. Adenocarcinoma: Adenocarcinoma is a type of lung cancer that is easily overlooked. Most patients have no obvious symptoms in the early stages. Generally, after an X-ray examination, shadows can be found in the patient's lungs. This disease mostly originates from peripheral lung cancer in the small bronchi. Although it grows slowly, it is more likely to metastasize through the blood.

3. Alveolar carcinoma: This type of lung cancer is uncommon, but it is highly differentiated and grows slowly. Lymphatic and hematogenous metastasis usually occurs when the patient is in the late stage of the disease.

Lung cancer is very harmful to patients, so everyone should pay more attention to the early symptoms and specific classification of lung cancer in life. Only in this way can we discover and understand the type of disease we are suffering from earlier, so as to choose the appropriate method to deal with the treatment.