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The pathology of aortic tissue. Sections from the specimen show a remarkably abnormal aorta with a very thin wall (A) and focal fibrocellular thickening of the intima (B). Special stains of elastin and trichrome revealed near-complete loss of medial elastic fibers, together with increased collagen fibers and strophic smooth muscle cells. H&E, hematoxylin and eosin.
