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Lung Cancer

The Diagnosis | The Treatment | Questions

The Lung

When you breathe in, air passes from the nose or mouth through the windpipe (trachea) which divides into two air passages, one going to each lung
The two air passages are known as the right and left bronchus and they form smaller tubescalled bronchioles, which carry air through the lungs
At the end of the bronchioles are millions of tiny air sacs or alveoli. It is here that oxygen is absorbed from the air and passes into the bloodstream to be circulated around the body
Carbon dioxide is the waste product that must be removed from the body. It passes from the bloodstream into the alveoli and is expelled by the lungs when you breathe out

The Cause
Smoking is the major cause of lung cancer, however, some people develop lung cancer without smoking.

Smoking causes up to 90% of lung cancer
Lung cancer is unusual under the age of 40
Risk increases substantially after the age of 50
The younger someone started smoking, the higher their risk of getting lung cancer
One in 10 smokers will develop lung cancer
Passive (environmental) tobacco smoke causes lung cancer but the risks are less than if you yourself smoke.

The Symptoms

A persistent cough
Shortness of breath
Coughing up blood-stained phlegm (sputum)
Chest discomfort - this may be noticed as a dull ache or a sharp pain when you cough or take a deep breath
Loss of appetite and loss of weight

If you do have any of the above symptoms you must have them checked by your doctor - but remember - all of them occur in many conditions other than cancer.

Lung Cancer in Hong Kong

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