Exercise-induced Gross Hematuria due to Concurrent Nutcracker Syndrome and Immunoglobulin a Nephropathy

We describe a patient presenting with loin pain and recurrent exercise-induced hematuria who concurrently had immunoglobulin A (IgA) nephropathy and nutcracker syndrome. While the diagnosis of IgA nephropathy did not fully explain the clinical symptoms, initial computed tomography was unrevealing. Renal venography eventually confirmed the presence of nutcracker syndrome.