溃疡性结肠炎,溃疡性结肠炎,kuiyangxing jiechangyan,kuiyangxing,jiechangyan,[拼音]:kuiyangxing jiechangyan[外文]:ulcerative colitis一种原因不明的直肠或结肠炎性疾病。主要累及直肠、乙状结肠和降结肠,病理特征为粘膜充血、水肿、多发性浅表溃疡,晚期肠...