角化棘皮瘤常见于皮肤,原发于唇粘膜者非常少见。我们曾收治一例此类患者,今报告于后并结合文献进行简要讨论。患者 姬某,男性,74岁,江苏藉,农民。住院号:65517。右下唇肿物一年,增大半年。一年前偶感右侧下唇痒,见有一绿豆样大小之肿块,硬,脱屑,近 Keratoacanthoma is common in the skin and is very rare in the primary mucosa. We have treated a case of this kind of patient, and this report is later discussed in conjunction with the literature for a brief discussion. Patient Ji M, male, 74 years old, borrowed from Jiangsu, farmer. Hospital number: 65517. The right lower lip is a year and increases for half a year. Feeling itching on the right lower lip a year ago, see a green bean size lump, hard, desquamation, near