Treatment and risk of metastases in trachea, lung or bronchial cancerbr Main characteristics of the diseasebr About 95 of all cases of the disease are seen in people who smoke. It is the most common type of cancer in men.br Risk of spread (metastasis): Pericardium; Brain; Liver; Leather; Bones; Pleura; The lymph nodes.br Treatment of the disorderbr For localized forms: surgical intervention; radiotherapy.br For metastases: chemotherapy.