DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Bleeding ear of a 77-year-old man after taking the drug warfarin. This haemorrhage occurred from a surgical scar one week after a squamous cell carcinoma (a form of skin cancer) was removed from his ear. He was prescribed warfarin to treat atrial fibrillation, a cardiac condition in which the heart beats irregularly and rapidly. A side-effect of the drug is that it often causes abnormal bleeding (haemorrhages) in different parts of the body. Squamous cells are scale-like cells in the skin which may become cancerous after prolonged exposure to strong sunlight or cancer-causing chemicals.
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