1 MCQs in Radiology for NEET PG
A 72-year-old ex-smoker with hypertension, hyperlipidaemia, and prior coronary intervention presents for follow-up ultrasonography of a known infrarenal abdominal aortic aneurysm. His previous scan 9 months ago showed a maximum diameter of 5.0 cm. The current transverse ultrasound image demonstrates the structure marked **A**, which measures 5.5 cm outer-to-outer. Based on international guidelines for elective repair in suitable surgical candidates, what is the primary clinical significance of this measurement crossing this threshold?
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