Lung squamous cell carcinoma is a type of non-small cell lung cancer according to the histopathological classification of lung cancer, and stage IV usually refers to stage IV. Stage IV is the clinical stage of squamous cell carcinoma of the lung, which belongs to advanced stage, indicating that distal metastasis of squamous cell carcinoma has already occurred, and the prognosis is poor.
Most squamous cell carcinoma originates from the bronchial mucosa of segmental or subsegmental bronchi and usually grows into the lumen of the bronchial tubes, which may lead to bronchial stenosis in the early stage of the disease, causing obstructive pneumonia or atelectasis, and so on.
Lung squamous cell carcinoma grows more slowly and metastasis occurs later, and there are more chances of surgical resection in the early stage, and the 5-year survival rate is also higher. However, if the disease has reached stage IV, it means that the squamous cell carcinoma has already metastasized to other organs or tissues, in which case the chance of surgery is usually lost and the 5-year survival rate will be greatly reduced.
It is recommended that patients actively cooperate with doctors for treatment in order to prolong the survival time and improve the quality of life.