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Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Obstructive coronary artery disease with a coronary artery calcium score of 0: A case report
Charles A German1, Joseph T Nicolazzi DO1, Petro Gjini Bs1
1Departments of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, NC, USA.
Insights
A zero Coronary Artery Calcium (CAC) score may offer false reassurance. This case highlights significant coronary artery disease despite a CAC score of 0, emphasizing the need for comprehensive risk assessment.
Area of Science:
- Cardiology
- Radiology
- Preventive Medicine
Background:
- Coronary Artery Calcium (CAC) scoring is a valuable tool for cardiovascular risk assessment and prognostication.
- A CAC score of 0 typically indicates a low risk of obstructive coronary artery disease and future cardiac events.
- However, a CAC score of 0 can sometimes lead to a false sense of security regarding cardiac health.
Observation:
- A 39-year-old woman underwent coronary computerized tomography angiography.
- Her Coronary Artery Calcium (CAC) score was calculated as 0.
- Despite the zero CAC score, significant disease was noted in the left anterior descending artery.
Findings:
- The patient was found to have substantial left anterior descending artery disease.
- This condition necessitated intervention with percutaneous coronary intervention and stent placement.
- The case demonstrates that a zero CAC score does not entirely exclude the possibility of significant coronary artery disease.
Implications:
- Clinicians should exercise caution when interpreting a zero CAC score, especially in younger individuals or those with other risk factors.
- Further diagnostic evaluation may be warranted in select cases even with a zero CAC score.
- Rethinking the absolute reliance on CAC scoring alone for risk stratification in all patient populations is suggested.
Abstract:
Coronary artery calcium (CAC) scoring has emerged as a useful tool in identifying patients who may benefit from more aggressive risk factor modification and for prognostication. Although a CAC score of 0 is associated with a very low prevalence of obstructive epicardial coronary artery disease and low event rates, it can also provide a false sense of reassurance. We present a case of a 39-year-old woman with a CAC score of 0 obtained as part of a coronary computerized tomography angiography study that was ultimately found to have significant left anterior descending artery disease requiring percutaneous coronary intervention and a stent.
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