PDF(Pubmed)
Abstract：
Crystal-storing histiocytosis (CSH) is an uncommon histiocytic proliferation reported to involve diverse organs and tissues, but involvement of the central nervous system (CNS) is rare. In most cases CSH is identified in association with underlying lymphoproliferative, plasma cell diseases or rarely with various inflammatory or infectious conditions. CSH is characterized by the cytoplasmic accumulation of crystalline material in histiocytes, most commonly of kappa immunoglobulin light chain. We report a unique case of localized CSH involving the left cerebellum and caudal brain stem in a young man with a history of gout but without known lymphoproliferative or plasma cell disorders. Awareness of this entity is important diagnostically, but also to ensure appropriate management and follow-up, particularly in the absence of apparent underlying malignancy.
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