Figure 5
From: Completely extradural intraspinal arteriovenous malformation in the lumbar spine: a case report
A photomicrograph of the arteriovenous malformation, composed of variably sized blood vessels with variable wall thickness and some intervening fibrofatty tissue. The arterial differentiation of some blood vessels is highlighted by the presence of a lamina elastica interna, stained black in the Elastica-van-Gieson stain (arrow heads). Original magnification × 100.