Types and Stages of Lung Cancer
Types and Stages of Lung Cancer
Lung cancer occurs when malignant cells of the lung multiply abnormally and start destroying nearby tissues. As more abnormal cells develop, they may form a mass or tumor. There are two main types of lung cancer—Non-small cell lung cancer and small cell lung cancer.
Stage and grade of lung cancer
The stage of lung cancer is determined by the size of the tumor, its location in the body, and how far it has spread.
- Stage 0: This is the earliest stage of lung cancer and is also known as “carcinoma in situ.” Here, the tumor is minute and has not spread in the lungs or deeper into the tissues.
- Stage 1: The tumor is not more than 4cm in diameter and has not spread outside of the lung or to any lymph nodes. This is the early stage where if cancer is spotted, it can be cured.
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