Common iliac artery diameter indicating aneurysm formation is greater than what value?

Common iliac artery diameter indicating aneurysm formation is greater than what value?

• A. >1.0 cm
• B. >1.5 cm
• C. >2.0 cm
• D. >2.5 cm

Answer: (B)

Aneurysm formation in the common iliac artery is defined by a diameter of 1.5 cm or greater. The normal iliac artery size is smaller than this, so reaching or exceeding 1.5 cm indicates dilation beyond normal limits. When measuring, use the outer-to-outer wall diameter at the vessel’s widest point in the transverse plane, ensuring the measurement is perpendicular to the vessel axis and taken consistently. Values larger than 1.5 cm indicate aneurysm, while 2.0 cm or 2.5 cm would reflect larger aneurysms but are not the defining threshold.

Aneurysm formation in the common iliac artery is defined by a diameter of 1.5 cm or greater. The normal iliac artery size is smaller than this, so reaching or exceeding 1.5 cm indicates dilation beyond normal limits. When measuring, use the outer-to-outer wall diameter at the vessel’s widest point in the transverse plane, ensuring the measurement is perpendicular to the vessel axis and taken consistently. Values larger than 1.5 cm indicate aneurysm, while 2.0 cm or 2.5 cm would reflect larger aneurysms but are not the defining threshold.