Takayasu's arteritis classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Farnaz Khalighinejad, MD [2]
Overview
Takayasu arteritis may be classified according to angiographic findings into 6 subtypes. The most common type is type III, which is found in as many as 65% of patients. The most commonly involved vessels include the left subclavian artery (50%), left common carotid artery (20%), brachiocephalic trunk, renal arteries, celiac trunk, superior mesenteric artery, and pulmonary arteries (50%). Infrequently, the axillary, brachial, vertebral, coronary, and iliac arteries are involved.
Classification
Takayasu arteritis may be classified according to angiographic findings into 6 subtypes:
Type I:Branches from the aortic arch
Type IIa:Ascending aorta, aortic arch and its branches
Type IIb:Ascending aorta, aortic arch and its branches, thoracic descending aorta
Type III:Thoracic descending aorta, abdominal aorta, and/or renal arteries
Type IV:Abdominal aorta and/or renal arteries
Type V:Combined features of types IIb and IV