Lung cancer is a tumor that originates in the cells of the lung tissue or airway lining and is the result of uncontrolled division of normal cells. Lung cancer is the leading cause of cancer death in both male and female populations in the United States.
Types of lung cancer
I. Non-small cell type
1.Adenocarcinoma
(1) The most common type of lung cancer.
(2) Begins along the outer edge of the small airways.
(3) Initial symptoms are not obvious and are often detected after lymph node and distant metastasis.
(4) Common in women, with poor prognosis.
2.Squamous carcinoma
(1) originates from the epithelial cells of bronchial mucosa.
(2) develops slowly
(3) rarely grows outside the lungs
(4) Common in males, associated with smoking.
(5) Early detection has a better prognosis.
3.Large cell lung cancer
(1) A rare type of lung cancer.
(2) originates from the bronchial mucosa epithelium.
(3) Can spread outside the lung.
(4) Prognosis is poor at the progressive stage.
Small cell type
Small cell lung cancer
(1) Arises from silver-loving cells in the bronchial mucosa or glandular epithelium and is associated with smoking.
(2) High malignancy with significant symptoms within 3 months.
(3) Early metastasis, many of which appear before lung cancer is detected.
(4) Sensitive to chemotherapy and radiotherapy and prone to recurrence.
(5) Very poor prognosis.
Mixed cell carcinoma
The same patient has more than one type of lung cancer at the same time, such as squamous carcinoma and adenocarcinoma, squamous carcinoma and small cell carcinoma.