Which sediment finding is characteristic of nephrotic syndrome due to lipiduria?

Which sediment finding is characteristic of nephrotic syndrome due to lipiduria?

• A. Hyaline casts
• B. Oval fat bodies
• C. Red blood cells
• D. Ketone bodies

Answer: (B)

In nephrotic syndrome, heavy protein loss is often accompanied by lipid abnormalities that spill into the urine. The lipids are taken up by renal tubular cells, forming lipid-laden cells that appear as oval fat bodies in the sediment. These oval fat bodies are lipid-containing tubular epithelial cells, and under polarized light their lipid droplets can show a characteristic Maltese cross pattern, which helps confirm lipiduria. This finding directly reflects the lipid excretion aspect of nephrotic syndrome. Hyaline casts are nonspecific, red blood cells point to bleeding within the nephron, and ketone bodies indicate altered metabolism or fasting states rather than lipiduria.

In nephrotic syndrome, heavy protein loss is often accompanied by lipid abnormalities that spill into the urine. The lipids are taken up by renal tubular cells, forming lipid-laden cells that appear as oval fat bodies in the sediment. These oval fat bodies are lipid-containing tubular epithelial cells, and under polarized light their lipid droplets can show a characteristic Maltese cross pattern, which helps confirm lipiduria. This finding directly reflects the lipid excretion aspect of nephrotic syndrome. Hyaline casts are nonspecific, red blood cells point to bleeding within the nephron, and ketone bodies indicate altered metabolism or fasting states rather than lipiduria.