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About Lung Cancer Lung Cancer is a disease that begins in the tissue of the lungs. The lungs are sponge-like organs that are part of the respiratory system. During breathing, air enters the mouth or nasal passage and travels down the trachea. The trachea splits into two sets of bronchial tubes that lead to the left and right lung. The bronchi branch off into smaller and smaller tubes that eventually end in small balloon-like sacs known as alveoli. The alveoli are where oxygen, carbon dioxide, and other substances are exchanged between the lungs and the blood stream.

Hong Kong has a multicultural population with Chinese, Muslims, Christians, Jews, and Hindus, each with their own set of beliefs and philosophy. The Chinese have three primary religions, Buddhism, Confucianism, and Taoism, each with separate teachings and axioms that have made their way into belief systems throughout their long histories.