Histiocytic Disorders, MalignantHistiocytic SarcomaHistiocytesLangerhans CellsSea-Blue Histiocyte SyndromeHistiocytosis, Langerhans-CellHistiocytosisIslets of LangerhansHistiocytosis, SinusHistiocytosis, Non-Langerhans-CellErdheim-Chester DiseaseBipolar DisorderLymphatic DiseasesAnxiety DisordersMental DisordersMood DisordersSkinLymph NodesGranuloma, Plasma CellHistiocytoma, Benign FibrousGranulomaDiagnostic and Statistical Manual of Mental DisordersSkin DiseasesEpidermisImmunohistochemistryPanniculitisLymphadenitisBiopsyXanthomatosisLymphohistiocytosis, HemophagocyticEpithelioid CellsMalacoplakiaMycobacterium scrofulaceum