Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Lesion classification. (A) Class I: single layer of foam cells. (B) Class II: multiple layers of foam cells. (C) Class III: multiple layers of foam cells with free cholesterol and rare SMCs. (D) Class IV: well-formed necrotic core (NC) and cholesterol clefts with overlying fibrous cap and some degree of macrophage (MΦ) invasion. (E) Class V (complex atheroma) all the class IV features plus neovascularization and/or intraplaque hemorrhage (IPH). L indicates lumen.
