Histiocytic Sarcoma: Review, Discussion of Transformation From B-Cell Lymphoma, and Differential Diagnosis
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- Rajan Dewar
- From the Department of Pathology, University of Michigan, Ann Arbor.
Description
<jats:sec><jats:title>Context.—</jats:title><jats:p>Histiocytic sarcoma is a rare neoplasm of mature histiocytes with an aggressive clinical course that can arise de novo or from a low-grade B-cell lymphoma. In particular, chronic lymphocytic leukemia/small lymphocytic lymphoma is a very common malignancy in the Western hemisphere, and most cases of chronic lymphocytic leukemia/small lymphocytic lymphoma have an indolent course and behavior. However, 2% to 8% of chronic lymphocytic leukemia/small lymphocytic lymphoma cases transform. Histiocytic sarcomatous transformation is rare and portends poor prognosis.</jats:p></jats:sec><jats:sec><jats:title>Objective.—</jats:title><jats:p>To review the clinical features, morphology, and key points related to the differential diagnosis for histiocytic sarcoma. We discuss recent understanding of the biology underlying transformation.</jats:p></jats:sec><jats:sec><jats:title>Data Sources.—</jats:title><jats:p>University of Michigan case and review of pertinent literature about histiocytic sarcoma and morphologic differential diagnosis.</jats:p></jats:sec><jats:sec><jats:title>Conclusions.—</jats:title><jats:p>Histiocytic sarcoma is a rare histiocytic neoplasm that can arise as a result of transdifferentiation from low-grade B-cell lymphomas, and has a wide differential diagnosis including other histiocytic/dendritic cell neoplasms, myeloid neoplasms, lymphomas, melanoma, and carcinoma. However, some key morphologic and immunohistochemical features allow for accurate classification.</jats:p></jats:sec>
Journal
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- Archives of Pathology & Laboratory Medicine
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Archives of Pathology & Laboratory Medicine 142 (11), 1322-1329, 2018-11-01
Archives of Pathology and Laboratory Medicine
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Details 詳細情報について
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- CRID
- 1363107370037857152
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- ISSN
- 15432165
- 00039985
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- Data Source
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- Crossref