This article offers a comprehensive overview of lung cancer, detailing its main types, stages, and progression. It emphasizes early detection importance and highlights critical differences between non-small cell and small cell lung cancer. Clear explanations of each stage help in understanding disease severity. Remember, consult healthcare professionals for personalized diagnosis and treatment options.

Lung Cancer Overview: Types and Progression Phases

Lung cancer arises when abnormal, malignant cells grow uncontrollably within the lungs, harming nearby tissues. These cells can accumulate and form tumors as they multiply. The main types are Non-small cell lung cancer and small cell lung cancer.

Types of lung cancer

Non-small cell lung cancer – The most common form, accounting for about 80-85% of cases.

Small cell lung cancer – Also known as oat cell carcinoma, constitutes roughly 10-15% of diagnoses.

Stages and severity

Stage 0 – The earliest stage, called carcinoma in situ, with tiny tumors that haven't spread.

Stage 1 – Tumor size up to 4cm, confined to the lungs, without involving lymph nodes. Early diagnosis can be curative.

Stage 2 – Tumor size varies; cancer may have affected nearby lymph nodes or tissues.

Stage 3 – Tumors of any size with spread to lymph nodes and potentially other parts of the lung.

Stage 4 – Tumor may be any size, with widespread spread to lymph nodes, opposite lung, pleura, or distant organs like the liver, bones, or brain.

Note: The details shared about symptoms, treatments, and health conditions are for informational purposes only. They are not substitutes for professional medical advice. Always seek guidance from qualified healthcare professionals for diagnosis and treatment planning.