Jian-Hua Qiao, MD, Terence M. Doherty, BA, Michael C

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Presentation transcript:

Calcification of the Coronary Arteries in the Absence of Atherosclerotic Plaque Jian-Hua Qiao, MD, Terence M. Doherty, BA, Michael C. Fishbein, MD, Isidro B. Salusky, MD, Daniel L. Luthringer, MD, Lorraine A. Fitzpatrick, MD, Prediman K. Shah, MD, Tripathi B. Rajavashisth, PhD Mayo Clinic Proceedings Volume 80, Issue 6, Pages 807-809 (June 2005) DOI: 10.4065/80.6.807 Copyright © 2005 Mayo Foundation for Medical Education and Research Terms and Conditions

FIGURE 1 Case 1. Medial coronary artery calcification in the absence of intimal calcification or atherosclerotic plaque. A and B, A large epicardial coronary artery is seen with diffuse medial calcification and minimal intimal fibromuscular hyperplasia. The artery is surrounded by epicardial adipose tissue (white region). At least one third of the circumference of the arterial tunica media is calcified (dark stained region). Intimal hyperplasia is present just internal to the medial calcification, but no foam cells are seen. Such intimal hyperplasia is composed predominantly of fibromuscular cells and proliferating myofibroblasts and does not represent atherosclerotic plaque. C and D, Medium-sized intramyocardial coronary artery with prominent medial calcification that is almost circumferential. C, Myocardial tissue (red-pink) surrounding the artery. D, The artery is adjacent to adipose tissue (white). E, A small, distal intramyocardial coronary artery with prominent medial calcification and dystrophic myocyte calcification (dark stain at 7 o'clock position). The lumen is almost totally occluded. F, Circumferential medial calcification of a distal intramyocardial coronary artery with marked perivascular and interstitial fibrosis and dystrophic myocyte calcification (hematoxylineosin, original magnifications: A and B, ×40; C and D, ×200; E and F, ×400). Mayo Clinic Proceedings 2005 80, 807-809DOI: (10.4065/80.6.807) Copyright © 2005 Mayo Foundation for Medical Education and Research Terms and Conditions

FIGURE 2 Case 2. A and B, Coronary artery sections from a patient with diabetes mellitus and renal dysfunction. C-E, Regions of calcification (black) involving the internal elastic lamina and the media. Note that although there is a typical amount of intimal thickening, no atherosclerotic plaque is present (hematoxylin-eosin, original magnifications: A and B, ×40; C-E, ×200). Mayo Clinic Proceedings 2005 80, 807-809DOI: (10.4065/80.6.807) Copyright © 2005 Mayo Foundation for Medical Education and Research Terms and Conditions