Bronchial Carcinoma ( Bronchogenic carcinoma ) causes and treatment

Aetiology of bronchial carcinoma

1, Cigarette smoking (90%):

• Cigarette smoking is the most important causative agent to develop Lung cancer.
• About 85-90% of lung carcinomas patients are smoker.
• Directly related to content of Tar in cigarette.

2, Radon gas (5%):

• Second most common cause is Radon gas exposure.

3, Industrial pollutants:

• Remaining are due to pollution like industrial pollutants e.g asbestos,. ionizing radiation,  cadmioum, chromium, berylium e.t.c.

4, Viral infection:

• Human papilloma virus ( HPV )
• Cytomegalovirus ( CMV)

Lung cancers of non-smoker have better prognosis than smoker.

Vit D (sunlight) or UVB exposure have preventive effects on lung cancer.