Ulcers | |
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Gastric ulcer |
An ulcer is a discontinuity or break in a bodily membrane that impedes normal function of the affected organ. According to Robbins's pathology, "ulcer is the breach of the continuity of skin, epithelium or mucous membrane caused by sloughing out of inflamed necrotic tissue."[citation needed] Common forms of ulcers recognized in medicine include:[citation needed]