Solid primary effusion lymphoma (Solid PEL) tumor. (A) Starry-sky pattern. (B) Numerous mitoses. (C) Solid PEL cells, like PEL cells, show anaplastic/plasmablastic cytologic features, and some resemble Reed-Sternberg cells. (D-F) Immunohistochemical studies reveal that the tumor cells are CD20-negative (D), CD138-positive (E), and human herpes virus 8-positive (labeling for latent nuclear antigen 1) (F). | Kim, Y., Park, C. J., Roh, J., & Huh, J. (2014). Current concepts in primary effusion lymphoma and other effusion-based lymphomas. Korean Journal of Pathology, 48(2), 81–90. https://doi.org/10.4132/KoreanJPathol.2014.48.2.81

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