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Figure 1

Figure 1. From: Clinical Diagnosis of Segmental Arterial Mediolysis: Differentiation from Vasculitis and Other Mimics.

Angiographic and histologic features of segmental arterial mediolysis in Case 1. (a) Focal stenoses of the right and left hepatic arteries (arrows). (b) Hyperemic blush in the left colonic flexure, suggesting formation of small collateral vessels from the splenic artery in response to occlusion of the left colic artery (not shown). (c) Large bowel with thrombosis in multiple small arteries (long arrows) and focal ischemia (short arrow). Hemosiderin and eosin stain (H&E), 10×. (d, e) Adventitial arteries with thrombosis, minimal inflammatory infiltrate, and granulation tissue disrupting the media (arrow). H&E, 50×. (f) Fibrosis of several small colonic arteries. H&E, 50×. (g, h) Foamy deterioration of media with disruption of internal elastic lamina of colonic vessels. Van Gieson stain, 50× (g), 100× (h).

Julie C. Baker-LePain, et al. Arthritis Care Res (Hoboken). ;62(11):1655-1660.

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