chapel hill consensus conference chapel hill consensus conference the chapel hill consensus conferences (chcc) (1994 and 2012) are a pair of international conferences which addressed the need of standardized classification system for systemic vasculitides. 2012 revised international chapel hill consensus conference nomenclature of vasculitides classification groupdiseases large-vessel vasculitis (lvv)takayasu's arteritis (tak); giant-cell arteritis (gca) medium-vessel vasculitis (mvv)polyarteritis nodosa (pan), kawasaki disease (kd) small vessel vasculitis (svv)anca-associated vasculitis (aav); immune complex svv variable vessel vasculitis (vvv)behcet's disease (bd); cogan's syndrome (cs) single organ vasculitis (sov)cutaneous leukocytoclastic angiitis; cutaneous arteritis; primary central nervous system vasculitis; isolated aortitis; others vasculitis associated with systemic diseaselupus vasculitis; rheumatoid vasculitis; sarcoid vasculitis; others vasculitis associated with probable etiologyhepatitis c virus-associated cryoglobulinemic vasculitis; hepatitis b virus-associated vasculitis; syphilis-associated aortitis; drug-associated immune complex vasculitis; cancer-associated vasculitis; others