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Crystal-storing histiocytosis and associated marginal zone lymphoma with extensive plasmacytic differentiation
Ayah Al-Qaderi1, Ali Sakhdari1
1Department of Laboratory Medicine and Pathobiology Toronto General Hospital, University Health Network Toronto Ontario Canada.
Insights
Crystal-storing histiocytosis (CSH) is a non-cancerous condition where cells build up immunoglobulin crystals. CSH can hide underlying B-cell lymphomas and plasma cell cancers, requiring careful tissue examination.
Area of Science:
- Pathology
- Hematology
- Oncology
Background:
- Crystal-storing histiocytosis (CSH) is characterized by intracellular immunoglobulin crystal accumulation within histiocytes.
- CSH is often linked to lymphoproliferative disorders, particularly B-cell lymphomas and plasma cell neoplasms.
Abstract:
Crystal-storing histiocytosis (CSH) is a non-neoplastic histiocytic proliferation that results from the intra-lysosomal accumulation of immunoglobulins as crystals. CSH is frequently associated with various B-cell lymphomas or plasma cell neoplasms. CSH can potentially obscure underlying lymphoproliferative neoplasms. This association should always be considered and the tissue should be carefully evaluated.
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