What is the difference between bronchitis and lung cancer?

Lung cancer is a malignant tumor that occurs in our lungs, that is, bronchial cancer. The common clinical symptoms of lung cancer are irritating dry cough, often accompanied by weight loss, chest pain, hemoptysis, breathing difficulties and other manifestations. The lungs can hear dry and moist rales. Chest X-ray or chest CT, then there is a mass, after bronchoscopy or lung biopsy, can be confirmed diagnosis. Bronchitis refers to repeated cough, expectoration, asthma, continuous attacks for more than two years, each lasting more than three months, the lungs can hear dry rales, or wet rales, pulmonary function tests suggest obstructive ventilation dysfunction.