A 14-year-old boy presented with bilateral cervical lymphadenopathy for a month. The patient had a brief period of low-grade fever and pharyngitis. A TORCH (toxoplasma, rubella, cytomegalovirus, and herpes simplex) serologic test was negative. A biopsy of the mass shows features of an abnormal lymph node, as illustrated in Figs. 81.1, 81.2, 81.3, 81.4, and 81.5.


Hematologic Neoplasm Sinus Histiocytosis Abnormal Lymph Node Malignant Histiocytosis Massive Lymphadenopathy 
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