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Cardiac CT Incidental Findings — EECC MCQ

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ModerateCoronary Artery DiseaseCardiac CT Incidental FindingsEECC

A 55-year-old man with known stable CAD and LVEF 55% is referred for a CTCA. The scan shows no significant stenosis but identifies a 15 mm pericardial effusion and a 4 cm ascending aortic aneurysm as incidental findings. How common are clinically significant incidental findings on cardiac CT?

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Correct answer: B — Clinically significant incidental findings occur in 10-25% of cardiac CTs — they include pulmonary nodules, aortic aneurysms, pericardial effusions, mediastinal masses, and pleural abnormalities; systematic reporting of extracardiac findings is recommended

Cardiac CT acquires volumetric data of the entire thorax within the scan field, routinely revealing extracardiac structures. Clinically significant incidental findings occur in 10-25% of cardiac CTs and include: (1) pulmonary nodules (require follow-up per Fleischner/BTS guidelines — lung cancer screening); (2) aortic aneurysms/dilatation; (3) pericardial effusions; (4) mediastinal lymphadenopathy; (5) pleural effusions/thickening; (6) hepatic/adrenal masses; (7) vertebral fractures; (8) breast masses (on non-gated acquisitions). The SCCT guidelines recommend: systematic review and reporting of extracardiac findings on all cardiac CTs, with appropriate follow-up recommendations. This creates both clinical value (early detection of serious pathology) and challenges (anxiety, additional testing, incidentaloma management).

Reference: SCCT Guidelines on Cardiac CT Reporting