Figure 2.

Arterial remodeling. (A) Diagram showing the manner in which remodeling can modify the cross-sectional area of arteries. The vessel in the center represents a normal artery. Remodeling can be hypotrophic, represented by reduced cross-sectional area of the vessel wall (left); eutrophic, with no change in cross-sectional area (center); or hypertrophic, characterized by increased cross-sectional area (right). These forms of remodeling can be inward, showing decreased lumen diameter (top); or outward, with increased lumen diameter (bottom). Modified with permission from Hypertension (13). (B) Diagram of a normal arterial wall (left) and an arterial wall with eutrophic inward remodeling, showing the decrease in both lumen and external diameter of the artery with normal wall area (right).