Jiaosheng Xu, Hongyan Ma, Xingfeng Yao, Xiaofeng Han, Yang Wen, Siwei Wang, Zigang Xu, Lin Ma
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Frequent detection of genetic aberrations reveals novel pathogenesis and treatment modalities in systemic juvenile xanthogranuloma.
Juvenile xanthogranuloma (JXG), the most common form of non-Langerhans cell histiocytosis (non-LCH), is generally confined to the skin during infancy and early childhood.1 JXG rarely involves extracutaneous tissues or systemic organs, resulting in high morbidity and mortality rates. Clonality in JXG has been verified by histopathological and genetic analyses, which have shown it to be tumorous rather than a reactive disorder of JXG.2 However, the exact etiopathogenesis of JXG remains unclear.