A 36-year-old man with lower-extremity edema, chronic proteinuria, and a 20-year history of progressively worsening burning pain in his extremities presented to our outpatient department. His family history included pain of the extremities and chronic proteinuria in his 2 older brothers. Physical examination revealed corneal opacities. Electrocardiogram showed left ventricular hypertrophy. The complete blood examination, including blood chemistry, was unremarkable. However, regular urinalysis tests showed proteinuria and characteristic “mulberry bodies,” consisting of fat with a whorl-like appearance in the urinary sediment (Figure).