title: Minimal-change lesion nephrotic syndrome with renal oncocytoma.
abstract: A renal mass was found in a 49-year-old man presenting with idiopathic nephrotic syndrome. The excised tumor was a well-encapsulated renal oncocytoma. Examination of the kidney revealed a minimal-change glomerular lesion and moderate arterionephrosclerosis. Nephrotic range proteinuria persisted through a postoperative course of prednisone therapy, but diminished and cleared within the subsequent two-year period. Renal function has remained stable and proteinuria has not recurred over a four-year follow-up. The clinical course suggests a previously unreported relationship between renal oncocytoma and minimal-change lesion nephrotic syndrome.
mesh_terms: D000236:Adenoma / Q000150:complications* / Q000473:pathology / Q000648:ultrastructure; D006801:Humans; D007680:Kidney Neoplasms / Q000150:complications* / Q000473:pathology / Q000648:ultrastructure; D008297:Male; D008875:Middle Aged; D009402:Nephrosis, Lipoid / Q000150:complications* / Q000473:pathology