小儿多发性肌炎比成人少见,本文对小儿多发性肌炎的特点作一综述,并与成人进行比较。一、小儿多发性肌炎的特点和分类Cook和Banker等强调小儿伴皮肤症状的多发性肌炎(即皮肌炎)呈全身性血管炎征象,此点与成人不同。通过电子显微镜发现骨骼肌小血管内皮细胞的变化明显,这成了小儿皮肌炎的一个重要的病理所见。Walton和Adams把多发性肌炎分为4型(表Ⅰ)在不伴有皮肤症状的单纯型 Pediatric polymyositis is rarer than in adults, and the characteristics of polymyositis in children are reviewed and compared with those in adults. First, the characteristics and classification of children with polymyositis Cook and Banker and other emphasis on children with skin symptoms of polymyositis (ie, dermatomyositis) showed systemic vasculitis signs, this point is different from adults. The changes of skeletal small-vessel endothelial cells were observed by electron microscope, which became an important pathological evidence of pediatric dermatomyositis. Walton and Adams classified polymyositis into type 4 (Table I) in simplex without skin symptoms