Lie CLASSIFICATION primarily large-vessel Takayasu arteritis giant cell arteritis Medium-vessel polyarteritis nodosa Churg-Struss syndrom Wegener's granulomatosis small-vessel Microscopic polyangiitis Schonlein-Henoch syndromLie CLASSIFICATION primarily large-vessel Takayasu artertis giant cell artertis Medium-vessel polyarteritis nodosa Churg-Struss syndrom Wegener’s granulomatosis small-vessel Microscopic polyangiitis Schonlein-Henoch syndrom