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.

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