A 58-year-old man undergoes coronary CT angiography for stable chest pain. The report states a 60% diameter stenosis of the mid left anterior descending artery with no other significant lesions. According to the CAD-RADS classification, this finding corresponds to which category?

• A CAD-RADS 2
• B CAD-RADS 5
• C CAD-RADS 4
• D CAD-RADS 3 ✓

Explanation

CAD-RADS grades stenosis severity: 0 is none, 1 is less than 25%, 2 is 25 to 49%, 3 is 50 to 69%, 4 is 70 to 99%, and 5 is total occlusion. A 60% stenosis therefore falls in category 3. The most tempting distractor is option C, but that requires at least 70% narrowing, and option B requires complete vessel opacification loss over more than 3 mm.

Reference: Grainger and Allison's Diagnostic Radiology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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