In normal lymph nodes, what is the appearance of the cortex on ultrasound?

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Multiple Choice

In normal lymph nodes, what is the appearance of the cortex on ultrasound?

Explanation:
Normal lymph nodes on ultrasound have an ovoid shape with a distinct cortex surrounding a central echogenic hilum. The cortex is darker because lymphoid tissue reflects fewer sound waves than fat or the bright hilum. So the cortex appears hypoechoic, while the hilum remains bright. This hypoechoic cortex-hilum pattern is what you look for in a normal node.

Normal lymph nodes on ultrasound have an ovoid shape with a distinct cortex surrounding a central echogenic hilum. The cortex is darker because lymphoid tissue reflects fewer sound waves than fat or the bright hilum. So the cortex appears hypoechoic, while the hilum remains bright. This hypoechoic cortex-hilum pattern is what you look for in a normal node.

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