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Small cell lung cancer is fast growing and the most aggressive type of lung cancer that occurs more frequently in men than women. It accounts for approximately 12% of all lung cancers and, in the majority of cases, is the result of smoking. It is quite rare to see patients with small cell lung cancer who have never smoked.
There are two types of small cell lung cancer and the cancer cells of each type will spread in different ways:
The disease usually starts in the centre of the chest in the bronchi and spreads widely to lymph nodes and organs such as the bones, brain, liver and adrenal glands. The spread is rapid and often the disease has spread before any noticeable symptoms have been detected.
Because small cell lung cancer spreads so quickly, symptoms may not present until well after the disease has spread to other organs. Small cell lung cancer symptoms may include:
The fact that this type of lung cancer spreads very rapidly highlights the importance for early detection.
As with all lung cancers, the type of treatment for small cell lung cancer will depend on the stage of the disease. The most common forms of small cell lung cancer treatments are chemotherapy and radiotherapy and, if the disease is in the early stages there is a potential for cure. Very often, patients in the early stages who respond well to chemotherapy and radiation therapy may also undergo preventative radiation (prophylactic cranio–irradiation) therapy to the brain as small cell lung cancer cells can often spread to the brain but not be detected.
Surgery is very rarely used for small cell lung cancer unless the tumour is detected in the very early stages and there has been no spread outside the lung and nearby lymph nodes.
Survival rates for small cell lung cancer will depend on the stage at which the disease was detected as well as other factors such as general health and gender. Women have improved survival rates over men for this type of lung cancer.
The overall survival rate for small cell lung cancer is approximately 6% but please refer to our lung cancer prognosis page for more detailed information about 5-year survival rates for small cell lung cancer at different stages. If the disease is caught at the early stages, 5-year survival rates can be up to 38%.
The rapid spread of small cell lung cancer, often without any recognisable symptoms and the associated decline in 5-year survival rates as the disease progresses really highlights the importance of early detection. The LungCheck lung cancer screening service offered by LungHealth UK is a simple blood test and risk assessment that will help to pick up signs of lung cancer early as well as identify risk factors that can be addressed. If you think you may be suffering symptoms or are at risk then please contact us to arrange an appointment for a LungCheck.
If you would like further information about lung cancer, please see our lung cancer information page or contact us.