结节性多发性动脉炎(简称多发性动脉炎),虽然比较少见,但由于其临床表现多种多样,常易误诊为其他疾病,因此,必须引起高度注意。本文报告两例因临床表现极不典型而误诊为“败血症”、“溃疡性结肠炎,结核性腹膜炎”等,在住院期间出现皮肤结节,最后经活检确诊。 Nodular polyarteritis (referred to as multiple arteritis), although relatively rare, but because of its diverse clinical manifestations, often misdiagnosed as other diseases, therefore, must pay close attention. This article reports two cases because of the extremely atypical clinical manifestations misdiagnosed as “sepsis”, “ulcerative colitis, tuberculous peritonitis”, etc., appear in the hospital during the skin nodules, and finally confirmed by biopsy.