Figure 2
From: Takayasu arteritis presenting as cerebral aneurysms in an 18 month old: A case report
H&E stain (200×, Fig 2A; 400×, Fig 2B) from right internal iliac artery shows transmural vasculitis with intimal thickening (asterisks) and giant cells (arrowheads). Elastic stain reveals disruption of elastic lamina (Fig 2C). AP DSA, fusiform aneurysms supraclinoid left ICA (arrowheads; Fig 2D), right ICA (arrowheads; Fig 2E). Note aneurysm clips (arrows). DSA, diminutive, irregular aorta (arrows; Fig 2F). Right common iliac artery not identified (asterisks), no flow distal left common iliac artery (arrowheads). Non-contrast head CT (Fig 2G) demonstrates acute hemorrhage (arrows).