<unk>  or lipuria is the presence of lipids in the urine.<unk>  is most frequently observed in nephrotic syndrome where it is passed as lipoproteins along with other proteins. It has also been reported as a sign following fat embolism. When<unk>  occurs, epithelial cells or macrophages contain endogenous fats. When filled with numerous fat droplets, such cells are called oval fat bodies. Oval fat bodies exhibit a "Maltese cross" configuration under polarized light microscopy. The Maltese cross appearance occurs because of its liquid-crystalline structure giving it a double refraction (birefringence).
Lipiduria
Xanthinuria
Chyluria
Sialuria
Ketonuria
Pentosuria
Beeturia
Uricosuria