Magnetic resonance imaging of non-tropical chyluria due to distal thoracic duct obstruction.

A 39-year-old white male with a history of subtotal thyroidectomy was referred because of intermittent nightly voiding of milky urine for a period of 1 year, suggestive of chyluria. Urine analysis revealed periodical proteinuria up to 3.8 g/day, triglyceriduria (137mg/dl) and chylomicronuria. Screening for infectious disease and urological abnormalities was negative. Both kidneys and the renal pelvis were normal. There was no indication of lymph leakage to the renal collecting system at bipedal Tc-DTPA (diethylenetriamine penta-acetic acid)-albumin lymphography. Magnetic resonance imaging (MRI) revealed both a dilated and tortuous thoracic duct from the suprarenal