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Glossaries |
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For many of us, medical and health insurance terms are unfamiliar or complex. Our glossaries define some of those terms. |
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Ulcer
An open sore or lesion of the skin or mucous membrane accompanied by sloughing of inflamed necrotic tissue. If the sore becomes infected, pus is formed. Simple ulcers may result from trauma, caustics, intense heat or cold, or arterial or venous stasis. They may occur as a complication of various veins due to stasis of blood leading to inflammation, necrosis, and sloughing of tissue. Ulcers of the mucous membrane of the stomach or duodenum are usually caused by gastric acid and pepsin.
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