Lung Cancer

What Is Lung Cancer?

Lung cancer is a disease caused by uncontrolled growth of abnormal cells in the lungs, leading to tumor formation that may spread to other parts of the body. The lungs play a vital role in breathing and oxygen exchange.

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Prevalence

Lung cancer is one of the most common cancers worldwide and the leading cause of cancer-related deaths. While smoking is the main risk factor, non-smokers can also develop lung cancer.

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Causes and Risk Factors

• Smoking and secondhand smoke

• Radon gas exposure

• Occupational carcinogens

• Previous chest radiation therapy

• Family history of lung cancer

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Symptoms of Lung Cancer

Early stages may be asymptomatic. As the disease progresses, symptoms may include:

• Persistent or worsening cough

• Chest pain

• Shortness of breath

• Coughing up blood

• Hoarseness

• Unexplained weight loss

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Types of Lung Cancer

• Small Cell Lung Cancer (SCLC)

• Non-Small Cell Lung Cancer (NSCLC)

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Diagnosis

Diagnosis may involve:

• Imaging tests (X-ray, CT scan)

• Sputum cytology

• Lung biopsy

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Treatment Options

Treatment depends on the cancer type and stage and may include:

• Surgery

• Chemotherapy

• Radiation therapy

• Targeted therapy

• Immunotherapy

• Palliative care

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Prevention

• Avoid smoking and quit if you smoke

• Reduce exposure to secondhand smoke

• Maintain a healthy lifestyle

• Early screening for high-risk individuals

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Conclusion

Early detection of lung cancer significantly improves outcomes. Smoking cessation remains the most effective prevention strategy.

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Medical Disclaimer

This article is intended for educational and informational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Never ignore medical advice or delay seeking care because of information you have read in this article. Always consult a qualified healthcare professional before starting, stopping, or changing any medication or treatment plan.