What is a characteristic sonographic finding in cases of renal lipomatosis?

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Multiple Choice

What is a characteristic sonographic finding in cases of renal lipomatosis?

Renal lipomatosis involves an overgrowth of fat in the renal sinus, often with thinning of the renal parenchyma from chronic atrophy. On ultrasound, fat is highly echogenic, so the hallmark is a markedly bright, hyperechoic renal sinus that outlines the calyces and pelvis. The cortex may become thin due to underlying atrophy, but the defining feature is the hyperechoic sinus tissue caused by fatty infiltration. While renal atrophy or irregular contour can accompany the condition, they are less specific, and hyperechoic renal cortex is not the characteristic finding.

Renal lipomatosis involves an overgrowth of fat in the renal sinus, often with thinning of the renal parenchyma from chronic atrophy. On ultrasound, fat is highly echogenic, so the hallmark is a markedly bright, hyperechoic renal sinus that outlines the calyces and pelvis. The cortex may become thin due to underlying atrophy, but the defining feature is the hyperechoic sinus tissue caused by fatty infiltration. While renal atrophy or irregular contour can accompany the condition, they are less specific, and hyperechoic renal cortex is not the characteristic finding.

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