是不是慢性风湿性关节炎的患者在病程中都有出现MRA 症状的可能性?或是慢性关节风湿的特殊型才出现MRA 等尚不清楚。必须注意皮下结节,浮肿等MRA 的前驱症状。诊断原则Ⅰ,见表。诊断原则Ⅱ:组织学所见:确定血管炎的存在。活检组织。病变部的皮肤、肌肉、末梢神经、肌膜、皮下结节。临床诊断为MRA 的病例组织学分类 Is it possible for patients with chronic rheumatoid arthritis to have symptoms of MRA during their course of disease? MRA et al. Appear to be of special significance for chronic rheumatoid arthritis. Must pay attention to subcutaneous nodules, edema and other precursor symptoms of MRA. Diagnostic principle Ⅰ, see table. Diagnostic principle II: Histology: Determine the presence of vasculitis. Biopsy tissue. Lesions of the skin, muscles, peripheral nerves, sarcolemma, subcutaneous nodules. Clinical diagnosis of MRA case histological classification