DR HAROUT TANIELIAN / SCIENCE PHOTO LIBRARY DR HAROUT TANIELIAN / SCIENCE PHOTO LIBRARY
Close-up of a basal cell carcinoma (skin cancer) on the cheek of the face in an 84 year old female patient. Known as rodent ulcer, this advanced tumour is one year old, one of the commonest skin cancers caused by overexposure to sunlight.
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