"It is a rare phenomenon outside the tropics. In the setting of renal surgery, it has been found in 3.2-5.4% patients post-partial nephrectomy. It was never found status post complete nephrectomy 1,2. No correlation has been found between the stage of the renal cell carcinoma and the finding of chyluria post surgery 2."
"Its appearance has only been described on cross-sectional imaging. In view of its lower density, the fatty chyle forms a supernatant on top of the heavier urine in the bladder, forming a fat-urine layer."
"In filariasis the Wuchereria bancrofti parasite obstructs the renal lymphatics leading to over-spill of chyle into the urinary tract."
"lymphatic filariasis (especially Wuchereria bancrofti)"