HistiocytesSea-Blue Histiocyte SyndromeHistiocytosisHistiocytosis, Non-Langerhans-CellHistiocytosis, SinusHistiocytic SarcomaHistiocytosis, Langerhans-CellHistiocytic Disorders, MalignantErdheim-Chester DiseaseLymphatic DiseasesGranuloma, Plasma CellHistiocytoma, Benign FibrousLymph NodesGranulomaPanniculitisNeutrophil InfiltrationLymphohistiocytosis, HemophagocyticXanthomatosisEpithelioid CellsMalacoplakiaLymphadenitisMycobacterium scrofulaceumImmunohistochemistryHistiocytic Necrotizing LymphadenitisBiopsyImmunoenzyme TechniquesHodgkin DiseaseLymphomaMacrophagesHistocytochemistryMononuclear Phagocyte SystemSkin DiseasesSkinRheumatoid NoduleFatal OutcomeAntigens, Differentiation, Myelomonocytic