What are the types of clinical symptoms of lung tumors

Malignant tumors are the most harmful disease to the human body. Many patients have lost their lives due to them, and there is no good treatment for malignant tumors. Therefore, the treatment of diseases such as lung tumors must start early. However, there are many types of symptoms of lung tumors, and different types of treatment methods are also different. Therefore, symptomatic treatment is the most ideal.
Squamous cell carcinoma is the most common type of lung tumor, accounting for about 50%. Most patients are over 50 years old, and most are men. Most of them originate from larger bronchi and are often central lung tumors. Although the degree of differentiation of squamous cell carcinoma varies, it generally grows and develops slowly and has a long course. It is more sensitive to radiation and chemotherapy. It first metastasizes through the lymph nodes, and blood metastasis occurs later.

Adenocarcinoma <br/>Originates from the bronchial mucosal epithelium, and a few originate from the mucous glands of large bronchi. The incidence rate is lower than that of squamous cell carcinoma and undifferentiated carcinoma, and the onset age is younger, and it is relatively more common in women. Most adenocarcinomas originate from smaller bronchi and are peripheral lung tumors. There are generally no obvious clinical symptoms in the early stages, and they are often discovered during chest X-ray examinations. They appear as round or oval masses, and generally grow slowly, but sometimes blood metastasis occurs in the early stages. Lymphatic metastasis occurs later.

Alveolar cell carcinoma <br/>Originates from the bronchial mucosal epithelium, also known as bronchioalveolar cell carcinoma or bronchiolar adenocarcinoma. It is located around the lung field and has the lowest incidence among all types of lung tumors. It is more common in women. It is generally highly differentiated and grows slowly. Cancer cells grow along the bronchioalveolar ducts and alveolar walls without invading the alveolar septa. Lymphatic and hematogenous metastasis occurs later, but can spread to other lobes of the lung or invade the pleura through the bronchi. Alveolar cell carcinoma has two morphological types: nodular and diffuse. The former can be a single nodule or multiple nodules; the latter is similar to pneumonia lesions. For nodular types with limited range, surgical resection has a better effect.