Pulmonary artery disease in Takayasu's arteritis: angiographic findings.

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Abstract
One hundred sixteen arteriographic examinations in 98 patients with Takayasu's arteritis were studied retrospectively to evaluate the extent of aortic and pulmonary disease. Stenosis was the most frequent finding in the aorta and its branches, but occlusion, dilatation, and aneurysms were also seen. Adventitial vascular structures, consistent with dilated vasa vasorum, were observed in five patients (5%) and systemic artery-pulmonary artery communication was seen in six (6%). Twenty-one (70%) of 30 patients who had pulmonary arteriography were shown to have pulmonary artery involvement. Upper lobe pulmonary arterial branches showed abnormalities most frequently; segmental branches, followed by subsegmental branches, were most often involved. The frequency of abnormal findings on pulmonary arteriograms correlated with the number of involved brachiocephalic vessels. Stenotic lesions in the aorta and its branches progressed in five (45%) of 11 patients, and those in the pulmonary artery progressed in one (33...

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