Takayasu's arteritis: a case report and discussion of differences in eastern and western cases.

: The possibility of a different clinical expression of Takayasu arteritis (TA) in different geographic areas has been discussed in previous reports. However, many aspects of this problem still remain unclear. A very atypical case of TA concerning the early onset and the unusually slow progress of the disease is reported. Referring to anatomicopathological, clinical, and therapeutic prognostic criteria reported in literature from oriental countries, many discrepancies appear evident. This is consistent with the hypothesis of two different clinical varieties of TA and suggests that, both in its prepulseless stage and after its actual recognition, this disease could show a less malignant progress in western countries.