恶性组织细胞病是一种少见的网状内皮系统异常增生的恶性疾病,多见于成人,小儿报导较少。我院收治一例,现介绍如下。患者,男孩,3岁,内蒙古土左旗人,因头顶部肿物20天,伴发热半个月于1982年7月16日住院(住院号4649)。20天前家长偶尔发现患儿头顶部有一拇指头大小肿物,无其它不适,照常玩耍。半月前先有发热伴腹泻,为稀水样便,当地按痢疾泊 Malignant histiocytosis is a rare malignant reticuloendothelial dysplasia, more common in adults, less reported in children. A case admitted to our hospital, are presented below. Patient, male, 3 years old, Tuzuo Banner, Inner Mongolia, was hospitalized for 20 days on the top of the head with fever for half a month on July 16, 1982 (hospital number 4649). Twenty days ago, parents occasionally found a thumb-sized tumor at the top of his head with no other discomfort, as usual. Half a month before the fever with diarrhea, watery stool, local dysentery