Echocardiographic phenomenon “RAC-sign” in the anomalous course of circumflex artery: a case report
https://doi.org/10.15829/1560-4071-2022-4889
Abstract
Coronary artery (CA) anomalies are a group of congenital heart defects with a diverse clinical performance, from lifelong asymptomatic to severe consequences such as sudden cardiac death. In some cases, CA anomalies become an incidental finding during echocardiography. If there is a suspicion of CA anomaly, a radiographic investigation (computed tomography (CT) angiography or magnetic resonance imaging) should be performed to clarify the anatomy and indications for surgical correction.
A case of diagnosing a tubular structure with hyperechoic walls in mitral valve projection during echocardiography is presented. The performed CT angiography confirmed the abnormal origin of circumflex artery from the right sinus of Valsalva with its retroaortic course. This echocardiographic sign is described in the English-language literature as Retroaortic Anomalous Coronary sign (RAC-sign).
About the Authors
K. V. Skaletsky
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
A. M. Namitokov
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
E. K. Donets
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
S. V. Kruchinova
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
V. A. Gagin
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
E. D. Kosmacheva
Research Institute of S.V. Ochapovsky Regional Clinical Hospital № 1
Russian Federation
Competing Interests:
Russian Federation
Krasnodar.
Competing Interests:
None
References
1. Witt CM, Elvert LA, Konik EA, et al. The RAC sign: retroaortic anomalous coronary artery visualization by transthoracic echocardiography. JACC Cardiovasc Imaging. 2018;11(4):648-649. doi:10.1016/j.jcmg.2017.06.011.
2. Chaitman BR, Lespérance J, Saltiel J, Bourassa MG. Clinical, angiographic, and hemodynamic findings in patients with anomalous origin of the coronary arteries. Circulation. 1976;53(1):122-31. doi:10.1161/01.cir.53.1.122.
3. Castillo JG, Sanz J, Fischer GW, et al. Management of anomalous left circumflex artery encircling the aortic annulus in a patient undergoing multivalvular surgery. J Card Surg. 2009;24(6):667-9. doi:10.1111/j.1540-8191.2009.00930.x.
4. Shriki JE, Shinbane JS, Rashid MA, et al. Identifying, characterizing, and classifying congenital anomalies of the coronary arteries. Radiographics. 2012; 32(2):453-68. doi:10.1148/rg.322115097.
Supplementary files
|
1. Видео к рисунку 1 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(20MB)
|
Indexing metadata ▾ | |
|
|
2. Видео к рисунку 2-3 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(1MB)
|
Indexing metadata ▾ | |
|
|
3. Видео к рисунку 3-1 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(2MB)
|
Indexing metadata ▾ | |
|
|
4. Видео к рисунку 3-2 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(3MB)
|
Indexing metadata ▾ | |
|
|
5. Видео к рисунку 3-3 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(2MB)
|
Indexing metadata ▾ | |
|
|
6. Видео к рисунку 3-4 | |
| Subject | ||
| Type | Исследовательские инструменты | |
Download
(1MB)
|
Indexing metadata ▾ | |
Review
For citations:
Skaletsky K.V., Namitokov A.M., Donets E.K., Kruchinova S.V., Gagin V.A., Kosmacheva E.D. Echocardiographic phenomenon “RAC-sign” in the anomalous course of circumflex artery: a case report. Russian Journal of Cardiology. 2022;27(2S):4889. (In Russ.) https://doi.org/10.15829/1560-4071-2022-4889
Views:
18439
Email this article 