A 2-year-old boy presented with anemia, thrombocytopenia, and pyelonephritis. CT scan showed splenomegaly and a retroperitoneal mass. An excisional biopsy was performed on the retroperitoneal mass. The histologic features are illustrated in Figs. 76.1, 76.2, 76.3 and 76.4.


Hodgkin Lymphoma Multinucleated Giant Cell Multisystem Disease Retroperitoneal Mass Histiocytic Lymphoma 
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