Segmental Arterial Mediolysis: A Multiguised Vasospastic Arteriopathy with Collateral Mesangial Cell Hyperplasia and Cardiac Toxicity Generated by Norepinephrine and Hyperdense Adrenoceptors Alone or by Crosstalk with Other Pressor Agents

Figure 18

Segmental arterial mediolysis reparative phase. The black arrow points to thick mature granulation tissue filling a large gap aneurysm. The blue arrow shows extended intimal plaque bedecking a medial island that show foci of medial loss with reparative fibrosis. Another granulation tissue gap repair is evident in the upper portion of the artery, Movat stain ×25.