Lung cancer is often insidious, producing no symptoms until the disease is well advanced. In approximately 7%-10% of cases, lung cancer is diagnosed in asymptomatic patients when a chest radiograph performed for other reasons reveals the disease. At initial diagnosis, 20% of patients have localized disease, 25% of patients have regional metastasis, and 55% of patients have distant spread of disease.
For more on the presentation of lung cancer, read here.
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Cite this: Emmanuel C. Besa. Fast Five Quiz: How Much Do You Know About Lung Cancer? - Medscape - Apr 04, 2016.