Abdominal aortic aneurysm screening : outcomes and management

This table summarizes the outcomes of AAA screening and provides recommendations for management based on the detected size of the aneurysm.

Result of AAA Screening	Aorta Diameter	Incidence in Screened Men	Management and Follow-up	Comments
No aneurysm found	< 3cm	Majority	No treatment or monitoring required; No further AAA screening	Aorta not enlarged
Small AAA	3cm to 4.4cm	~1.1%	Yearly scan; Treatment if progresses to large AAA	Given advice on lifestyle modifications (e.g., smoking cessation, healthy diet, regular exercise)
Medium AAA	4.5cm to 5.4cm	~0.5%	Scan every 3 months; Treatment if progresses to large AAA	Given advice on lifestyle modifications (e.g., smoking cessation, healthy diet, regular exercise)
Large AAA	≥ 5.5cm	~0.1%	Immediate referral to a vascular surgeon for potential surgical intervention	Surgery is usually recommended due to high risk of rupture; the Risk of untreated large AAA greater than surgical risks

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