**2. Definition & anatomy**

Diffuse CAD was defined as: length of significant stenoses ≥20 mm; multiple significant stenoses (≥70% narrowing) in the same artery separated by segments of apparently normal (but probably diseased) vessel; and significant narrowing involving the whole length of the coronary artery [5] (Figure 1). Provided a mature plaque is successfully endarterected through

© 2013 Gu et al.; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. © 2013 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

the true arterial lumen (Figure 2)., patients with a long diffuse lesion can be treated very efficiently. But sometimes long, severe diffuse coronary artery stenosis isn't recommended for surgical treatment because of its low patency and more postoperative complications [6]. (Figure 3)

**Figure 2.** Mature plaque in the blocked coronary artery

Surgical Treatment for Diffuse Coronary Artery Diseases

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**Figure 3.** Diffuse coronary artery with immature plaque

**Figure 1.** Diffuse CAD of the right coronary artery
