Updated classification of Castleman disease

Abbreviations: HHV-8, human herpes virus type 8; iMCD, idiopathic multicentric Castleman disease; IPL, idiopathic plasmacytic lymphadenopathy; MCD, multicentric Castleman disease; NOS, not otherwise specified; POEMS, polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes; TAFRO, thrombocytopenia, anasarca, fever, reticulin fibrosis or renal insufficiency, and organomegaly.