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Table 1 Classification of TA from the Takayasu Conference 1994 [1]

From: Takayasu arteritis with congestive heart failure in 26-year-old male: a case report

Type

Vessel involvement

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