Coral Reef Aorta Demonstrated by Serial Computed Tomography: A Case Report

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ID: 330872
2026
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Abstract
Abstract Background Coral reef aorta (CRA) is a rare vascular disorder characterized by dense, protruding calcified plaques within the abdominal aorta, often resulting in ischemic symptoms. Because of its rarity and atypical presentation, CRA is frequently diagnosed at an advanced stage. Case summary A 50-year-old male smoker with hypertension and hyperlipidemia presented with progressive lower extremity symptoms. Four years before presentation, he developed bilateral lower limb numbness and was diagnosed with lumbar disc herniation, which likely masked the underlying vascular disease. One year before presentation, he developed intermittent claudication after approximately 10 min of walking, followed by severe bilateral rest pain one month before presentation. The ankle–brachial index (ABI) was markedly reduced to 0.49 bilaterally. Computed tomography (CT) revealed extensive calcified plaques causing near occlusion of the infrarenal abdominal aorta. Serial CT over 6 years demonstrated progressive intraluminal calcification, facilitating diagnosis and treatment planning. Open aortic graft replacement with inferior mesenteric artery reconstruction was performed. Postoperatively, symptoms resolved completely, and the ABI improved to 1.13 (right) and 1.19 (left). At 1-year follow-up, the patient remained asymptomatic with the ABI of 1.07 bilaterally, and CT confirmed graft patency. Discussion This case highlights the importance of considering CRA in patients with lower limb ischemia, particularly when symptoms are initially attributed to non-vascular conditions. Serial CT is essential for detecting progression and enabling timely diagnosis. Open surgical intervention remains the most reliable treatment and can achieve excellent clinical outcomes in advanced disease.
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Authors Tsuneaki Kawashima, Masaki Harada
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Journal European Heart Journal - Case Reports
Year 2026
DOI
10.1093/ehjcr/ytag732
URL
https://doi.org/10.1093/ehjcr/ytag732
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