Incidental coronary calcifications on routine chest CT: Clinical implications

Area of Science:

• Radiology
• Cardiology
• Public Health

Background:

• Coronary artery calcification (CAC) is a key indicator of atherosclerosis and a significant predictor of cardiac mortality.
• Atherosclerosis-related mortality has declined by 50% in recent decades, largely due to early detection and intervention of risk factors.
• Millions of chest computed tomography (CT) scans are performed annually, offering opportunities for incidental CAC detection.

Purpose of the Study:

• To review the clinical evidence linking radiologically identified CAC to atherosclerosis and cardiac outcomes.
• To evaluate the implications of assessing incidental CAC on standard chest CT interpretations.
• To advocate for the reporting of incidental CAC in appropriate clinical settings.

Main Methods:

• Literature review of clinical studies on CAC, atherosclerosis, and cardiac outcomes.
• Analysis of the role of incidental CAC detection in non-gated chest CT examinations.
• Discussion of the impact of reporting incidental findings on patient management.

Main Results:

• CAC is a well-established marker for atherosclerosis and an independent risk factor for cardiac mortality.
• Incidental identification of CAC on non-gated chest CT is feasible in a large patient population.
• Reporting incidental CAC can lead to timely interventions and potentially reduce cardiac mortality.

Conclusions:

• Reporting incidental coronary artery calcification found on non-gated chest CT has a substantial impact on patient management and mortality.
• Radiologists should consider noting incidental CAC in the impression of reports when identified, particularly in appropriate clinical contexts.
• Routine reporting of incidental CAC could enhance cardiovascular risk assessment and preventive strategies.