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.
A smokers lungs are generally as pink and healthy as a non-smokers lungs, and last year in the UK, half of all lungs used in transplants came from smokers. The 'black lung' is, in fact, a cancerous lung. If a smoker gets lung cancer, yes, the lung will turn black. If a non-smoker gets lung cancer, his lung will also turn black. Trying to label a cancerous lung and a smokers lung as one and the same thing is just more downright dishonesty from the anti-smoking movement. âDr.