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1 - Pathology of carotid artery atherosclerotic disease

from Background

Published online by Cambridge University Press:  03 December 2009

By
Renu Virmani ,
Allen Burke ,
Elena Ladich  and
Frank D. Kolodgie
Edited by
Jonathan Gillard ,
Martin Graves ,
Thomas Hatsukami  and
Chun Yuan
Renu Virmani
Affiliation:
The International Registry of Pathology, Gaithersburg MD, USA
Allen Burke
Affiliation:
The International Registry of Pathology, Gaithersburg MD, USA
Elena Ladich
Affiliation:
The International Registry of Pathology, Gaithersburg MD, USA
Frank D. Kolodgie
Affiliation:
The International Registry of Pathology, Gaithersburg MD, USA
Jonathan Gillard
Affiliation:
University of Cambridge
Martin Graves
Affiliation:
University of Cambridge
Thomas Hatsukami
Affiliation:
University of Washington
Chun Yuan
Affiliation:
University of Washington
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Summary

Introduction

Stroke is the third leading cause of death in the United States, accounting for 600 000 cases each year, of which about 500 000 are first attacks (American Heart Association, 2001; Heart and Stroke Statistical Update. Dallas, TX, 2001). The pathologic events leading to stroke are complex, and involve atherosclerosis of the aorta and its branches, especially the carotid artery, obstruction of blood flow by increasing plaque burden, embolization of plaque components, especially of thrombotic material, and cerebrovascular factors. The importance of plaque components that predispose to plaque disruption, in addition to the degree of stenosis, has relatively recently been appreciated in relation to cerebral ischemic events. The purpose of this chapter is to characterize atherosclerotic carotid disease in light of our knowledge of coronary atherosclerosis and relate carotid plaque morphology to cerebral ischemic syndromes with special focus on features of plaque instability. A precise understanding of the histologic features of carotid atherosclerosis should help target specific treatments that are likely to be beneficial in the prevention of a subsequent event.

Pathologic features of atherosclerosis, lessons learned from aortic and coronary artery disease

The pathologic classification of atherosclerosis is in constant evolution, and should reflect in part variation based on the size of the artery involved. Two types of lesions were initially described based on gross examination of the aorta: the fatty streak and the atheromatous plaque. The fatty streak, as the less elevated and not prone to thrombosis, was considered a precursor lesion to the advanced atheromatous plaque.

Type
Chapter
Information
Carotid Disease
The Role of Imaging in Diagnosis and Management
 , pp. 1 - 21
Publisher: Cambridge University Press
Print publication year: 2006

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