迁延性、慢性腹泻是小儿常见病，病因复杂，发病率高。
Puerile chronic persisting diarrhea is a kind of common disease.
胸腺瘤患者具有突出的自身免疫倾向，推测自身免疫性肠病可能是此类慢性腹泻的主要病因之一。
This group of patients has remarkable predisposition to autoimmunity and the diagnosis of autoimmune enteropathy should be considered in such cases.
探讨小儿慢性腹泻（CDD）的流行病学与病因、发病情况、病因与临床特点。
To explore the epidemiology and etiology of chronic diarrhea diseases(CDD)in children, and understand the incidence, etiology and clinical manifestation.
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