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ALCL, lymphohistiocytic variant, CD163 IHC

ALCL, lymphohistiocytic variant, CD163 IHC
#00064822
Author: Benjamin Kaumeyer, MD; Olufunmilayo Abobarin-Aofolaju, M.D
Category: Lymphoma: Mature T and NK cell lymphoproliferations > Mature T-cell Lymphomas > Anaplastic Large Cell Lymphoma, ALK positive
Published Date: 12/20/2023

CD163 IHC highlights the numerous background histiocytes which partially obscure the neoplastic lymphoma cells. Note, the atypical cell nuclei can be appreciated on the counterstain and these are negative for CD163.