【专题】包皮内侧和龟头的一种慢性炎症

　4.浆细胞性龟头炎(plasma cell balanitis or plasma cell balanitis of zoon) 是包皮内侧和龟头的一种慢性炎症，伴浆细胞浸润。惟一至数个境界清楚的炎性红斑，表面湿润有光泽，有时可伴有糜烂和点状出血。外观像未干透的防龋涂膜，表面有似辣椒粉样的细小斑点。病理切片可见表皮萎缩，角质层和颗粒层消失，真皮乳头内大量浆细胞浸润，毛细血管扩张，有含铁血黄素沉着。
　　5.云母状和角化性假上皮瘤性龟头炎(micaceous and keratotic pseudoepotheliomatous balanitis) 好发于老年人，多有包皮环切手术史。表现为龟头上出现被覆银白色云母状鳞屑的疣状赘生物，似银屑病样损害，可形成皲裂及溃疡，患处逐渐失去弹性，日久呈萎缩性改变。组织病理示表皮角化过度，角化不全，呈假上皮瘤样增殖，棘层肥厚，真皮上部慢性炎症细胞浸润。
　　此外，阿米巴、滴虫感染时也可引起龟头炎。阿米巴性龟头炎多来自肠道阿米巴病，滴虫性龟头炎有与滴虫感染的女性**史等。分泌物可找到阿米巴原虫或滴虫。
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