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E-Cadherin Expression in Blastic Plasmacytoid Dendritic Cell Neoplasms: An Unrecognized Finding and Potential
Patrick Shenjere1, Richard Chasty2, Anshuman Chaturvedi1
1Department of Histopathology, 5294The Christie NHS Foundation Trust, Manchester, UK.
Abstract:
E-cadherin is expressed in hematopoietic erythroid precursors, but to our knowledge, its expression in blastic plasmacytoid dendritic cell neoplasm (BPDCN) has not been described. We report a case of BPDCN showing strong expression of E-cadherin, arising in a patient with history of primary myelofibrosis. Four more cases of BPDCN tested all showed strong expression of E-cadherin. Lack of awareness of this pattern of expression may lead to erroneous diagnosis of acute erythroid leukemia. It is increasingly becoming important to correctly identify this group of neoplasms, as approved new anti-CD123-targeted therapies are becoming available.
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