本文报告皮肌炎55例,关节受累33例(60%),皮肤瘙痒22例(40%)。3例有典型皮疹,1例皮疹呈红皮病样改变,但均无肌炎症状。4例(7.3%)发现癌肿,分别为原发性肝癌、食道癌、乳腺癌和肺癌。5例(9.1%)死亡,均有营养不良性衰竭。单纯使用皮质激素组和同时加免疫抑制剂治疗组比较,疗效无显著差异(P>0.9)。 This article reports 55 cases of dermatomyositis, joint involvement in 33 cases (60%), skin itching in 22 cases (40%). 3 cases had a typical rash and 1 case had erythroderma-like changes, but none had myositis. Four cases (7.3%) found cancers, which were primary liver cancer, esophageal cancer, breast cancer and lung cancer. Five patients (9.1%) died of malnutrition failure. There was no significant difference (P> 0.9) between the corticosteroids group and the immunosuppressant group.