Left circumflex arising from right coronary sinus
Last revised by Mateusz Wilczek on 28 Dec 2023
Citation, DOI, disclosures and article data
Citation:
Weerakkody Y, Wilczek M, Elfeky M, Left circumflex arising from right coronary sinus. Reference article, Radiopaedia.org (Accessed on 23 Apr 2024) https://doi.org/10.53347/rID-60945
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rID:
60945
Article created:
9 Jun 2018,
Yuranga Weerakkody ◉
Disclosures:
At the time the article was created Yuranga Weerakkody had no recorded disclosures.
View Yuranga Weerakkody's current disclosures
Last revised:
28 Dec 2023,
Mateusz Wilczek
Disclosures:
At the time the article was last revised Mateusz Wilczek had no financial relationships to ineligible companies to disclose.
View Mateusz Wilczek's current disclosures
Revisions:
5 times, by
3 contributors -
see full revision history and disclosures
Systems:
Synonyms:
- LCx arising from right coronary sinus
- Left circumflex arising from the right coronary sinus
Left circumflex (LCx) arising from right coronary sinus (RCA) is a coronary arterial variant.
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Epidemiology
It is considered the most common coronary anomaly with prevalence range of around 0.37-1.3 % of all patients.
Subtypes
According to some publications, anomalous LCx is divided into 3 types 9
type I: separate ostia for right coronary artery (RCA) and LCx
type II: common ostia in the right sinus.
type III: LCx arising as a branch of the proximal RCA.
Course
It commonly arises from a separate ostium within the right sinus, or as a proximal branch of the RCA. - i.e. left circumflex arising from right coronary artery.
Significance
Although this anomaly is usually classified as benign and asymptomatic, there are occasional reports of sudden death, myocardial infarction, and angina pectoris in the absence of atherosclerotic lesions 1.
See also
References
- 1. Plastiras SC, Kampessi OS, Gotzamanidou M, Kastanis P. Anomalous origin of the left circumflex artery from the right coronary artery: a case report. (2008) Cases journal. 1 (1): 336. doi:10.1186/1757-1626-1-336 - Pubmed
- 2. Çitaku H, Kamberi L, Gorani D, Koçinaj D, Krasniqi X. Anomalous Origin of Left Circumflex Artery. (2015) Medical archives (Sarajevo, Bosnia and Herzegovina). 69 (6): 423-4. doi:10.5455/medarh.2015.69.423-424 - Pubmed
- 3. Dursunoğlu D, Ozalp G, Taşköylü O, Semiz E. Anomalous origin of the left circumflex coronary artery: A case report. (2007) Experimental and clinical cardiology. 12 (4): 207-8. Pubmed
- 4. Kim SY, Seo JB, Do KH, Heo JN, Lee JS, Song JW, Choe YH, Kim TH, Yong HS, Choi SI, Song KS, Lim TH. Coronary artery anomalies: classification and ECG-gated multi-detector row CT findings with angiographic correlation. (2006) Radiographics : a review publication of the Radiological Society of North America, Inc. 26 (2): 317-33; discussion 333-4. doi:10.1148/rg.262055068 - Pubmed
- 5. Harmeet Kaur Rissam, Lalit Garg, Umesh Kumar Mittal, Satbir Singh. Uncommon variants of left circumflex coronary artery (LCX): evaluation with 256-slice dual source CT coronary angiography. (2015) BMJ Case Reports. 2015: bcr2015210495. doi:10.1136/bcr-2015-210495 - Pubmed
- 6. Pursnani A, Jacobs JE, Saremi F, Levisman J, Makaryus AN, Capuñay C, Rogers IS, Wald C, Azmoon S, Stathopoulos IA, Srichai MB. Coronary CTA assessment of coronary anomalies. (2012) Journal of cardiovascular computed tomography. 6 (1): 48-59. doi:10.1016/j.jcct.2011.06.009 - Pubmed
- 7. Villa AD, Sammut E, Nair A, Rajani R, Bonamini R, Chiribiri A. Coronary artery anomalies overview: The normal and the abnormal. (2016) World journal of radiology. 8 (6): 537-55. doi:10.4329/wjr.v8.i6.537 - Pubmed
- 8. Çitaku H, Kamberi L, Gorani D, Koçinaj D, Krasniqi X. Anomalous Origin of Left Circumflex Artery. (2015) Medical archives (Sarajevo, Bosnia and Herzegovina). 69 (6): 423-4. doi:10.5455/medarh.2015.69.423-424 - Pubmed
- 9. Rissam HK, Garg L, Mittal UK, Singh S. Uncommon variants of left circumflex coronary artery (LCX): evaluation with 256-slice dual source CT coronary angiography. (2015) BMJ case reports. doi:10.1136/bcr-2015-210495 - Pubmed
Incoming Links
Related articles: Pathology: Vascular: Congenital coronary artery anomalies
-
congenital coronary artery anomalies
- absent coronary artery
- absent circumflex artery
- absent right coronary artery
- absent left anterior descending artery
- absent left main trunk (split origination of LCA)
- coronary hypoplasia
- ectopic origin
- anomalous left coronary artery off the pulmonary artery (ALCAPA)
-
anomalous aortic origin of coronary artery
- origination of a coronary artery from the opposite sinus (ACAOS)
- single coronary artery
- LCA or RCA (or a branch of either artery) arising from the non-coronary sinus
- LCx and LAD arising separately from the left coronary sinus
- anomalous location of coronary ostia
- from sinotubular junction
- from ascending aorta
- split artery origins
- anomalous course of coronary arteries
- absent coronary artery
- anomalies of intrinsic coronary arterial anatomy
- congenital ostial stenosis or atresia (LCA, LAD, RCA, Cx)
- coronary ostial dimple
- coronary ectasia or aneurysm
- intramural coronary artery (myocardial bridging)
- subendocardial coronary course
- coronary crossing
- anomalous origin of posterior descending artery (PDA) from the anterior descending branch or a septal penetrating branch
- dual right coronary artery
- dual left anterior descending artery
-
anomalies in coronary arterial termination
- inadequate arteriolar/capillary ramifications
- presence of fistulation from terminal coronary arteries to various structures (coronary arteriovenous fistula)
- extracardiac termination
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