Interior of the cecum and lower end of ascending colon with the ileocecal valve labeled as colic valve. Endoscopic image of cecum with arrow pointing to ileocecal valve in foreground.
Lung cancer is a malignant tumour that starts in the cells of the lung. Malignant means that it can spread, or metastasize, to other parts of the body. When cancer starts in lung cells, it is called primary lung cancer. The lung is part of the respiratory system. You use your lungs when you breathe.
Most lung cancer statistics include both small cell and non-small cell lung cancers. In general, small cell lung cancer accounts for about 10% to 15% of all lung cancers.Lung cancer (both small cell and non-small cell) is the second most common cancer in both men and women (not counting skin cancer).ost lung cancer statistics include both small cell and non-small cell lung cancers. In general, small cell lung cancer accounts for about 10% to 15% of all lung cancers.