How diagnosis of systemic scleroderma

According to 1980 United States Institute of Rheumatology diagnostic criteria for systemic scleroderma, All meet the following criteria or one of the main two secondary standard, can be diagnosed with systemic scleroderma. (1) main criterion A proximal scleroderma, or fingers and metacarpophalangeal joint or metatarsophalangeal joint over there any site symmetry skin thickening and hardening grasp. Such changes can be involved throughout the body, face, neck and torso (chest and abdomen). (2) secondary standards ① finger scleroderma: The skin changes limited to fingers. ② fingers Depression scar or organizations that cushion disappeared: ischemia-induced depression or a fingertip pads (referring to belly) organizations disappear. ③ bottom of bilateral pulmonary fibrosis: standard chest film displayed on the network of bilateral linear or linear nodular shadows to the basal part of the lung was most apparent widespread demons can be a point or "honeycomb lung" appearance. These changes should not be attributed to primary pulmonary lesions.