please write a paragraphy about ulcer

来源：百度知道 编辑：UC知道 时间：2024/05/12 10:39:06
不是翻译

请写下对溃疡paragraphy

Ulcer id a lesion of the skin or a mucous membrane such as the one lining the stomach or duodenum that is accompanied by formation of pus and necrosis of surrounding tissue, usually resulting from inflammation or ischemia.