Abstract
Chronic spinal cord injury, when complicated by chronic suppurative infections, has replaced chronic tuberculosis as a leading cause of secondary amyloidosis. Renal involvement with secondary amyloidosis is characterized by the presence of nephrotic range proteinuria and an increased incidence of renal vein thrombosis. Two cases of acute renal vein thrombosis associated with secondary amyloidosis in patients with spinal cord injury are presented. In both cases, a past history of extensive decubitus ulcerations and urinary tract infections preceded the development of nephrotic range proteinuria. In case 1, nonoliguric acute renal failure occurred after the development of acute bilateral renal vein thrombosis. The patient declined dialytic therapy and expired with uremia. In case 2, worsening renal function and increased proteinuria resulted after the development of acute unilateral renal vein thrombosis. These cases include the clinical and anatomic findings of acute renal vein thrombosis that occur as a complication of secondary amyloidosis. Acute renal vein thrombosis should be considered whenever an acute change in renal function or increase in proteinuria is noted in this setting.
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