Lung cancer results from the development of a tumor inside the lung, referred to as primary lung cancer. However, the lungs can also be a site for metastases originating from another tumor, such as breast cancer. In the latter case, it is not strictly lung cancer, and the choice of treatment depends on the type of cancer causing the metastases.
The figures below concern primary lung cancers in Belgium in 20211:
- 9,192 patients diagnosed with lung cancer
- 3rd most common cancer in Belgium
- 76.4% mortality within 5 years in men and 67.9% in women.
The symptoms of lung cancer typically manifest late, with the initial stages showing no discernible signs. As the disease progresses, affected individuals may develop general symptoms such as persistent cough, presence of blood in sputum, recurrent inflammation of the respiratory pathways, and shortness of breath. Unfortunately, late diagnoses are common as many people overlook these general symptoms, thus delaying medical intervention. Consequently, lung cancer diagnosis often occurs when metastases are already present, as is the case in about half of situations.
As depicted in the table below, early detection of tumors would allow for intervention at an earlier stage, thereby increasing the chances of survival.
