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ULCER

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Originally appearing in Volume V27, Page 565 of the 1911 Encyclopedia Britannica.
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ULCER , an open sore (derived through the See also:

French from See also:Lat. ulcus, Gr. EXicor). When a portion of See also:animal See also:tissue See also:dies in consequence of an infection or injury, the See also:death of that tissue taking See also:place by See also:gradual breaking down or disintegration, the See also:process is termed ulceration and the result an ulcer. When the ulcer is spreading the place is painful and the surrounding parts are flushed with extra See also:blood, but under appropriate treatment the destructive process ceases and the ulcer gradually heals. The See also:bright See also:surface of the ulcer becomes glazed over, and those changes take place in it which occur in an open See also:wound. The ulcer gradually contracts, and See also:round its edges cicatrization, or scarring, occurs. Ulcers may arise from various causes in different parts of the See also:body, and in association with certain specific diseases, such as syphilis, tubercle, See also:cancer and typhoid See also:fever.

End of Article: ULCER

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