Background. Thirty-five patients with TAO and 35 with ASO have been st
udied. To determine differences between these two arterial diseases, w
e used clinical criteria, arteriographic and morphological methods. Th
e peripheral (below the bifurcation of the popliteal artery) angiograp
hic changes were found in TAO with 94% sensitivity, 94% specificity an
d with 96% of positive predictive value. Other clinical diagnostic cri
teria for differential diagnosis had a lower value (they had high sens
itivity and low specificity or low sensitivity and high specificity).
Results. The histologic studies confirmed the clinical diagnoses of Bu
erger's disease in 92.9% cases. The pathologic findings in TAO and ASO
were different.Conclusions. Our investigations proved that the charac
teristics of Buerger's disease include the development of changes not
only in small and medium size arteries or veins, but also in microcirc
ulation.