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Related Experiment Videos

The "nutcracker phenomenon" with orthostatic proteinuria: case reports.

M Ekim1, Z B Ozçakar, S Fitoz

  • 1Department of Pediatric Nephrology, Ankara University Medical School, Turkey.

Clinical Nephrology
|April 25, 2006
PubMed
Summary

The nutcracker phenomenon, a rare condition compressing the left renal vein, can cause orthostatic proteinuria. This case report highlights its importance in diagnosing proteinuria and hematuria.

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Area of Science:

  • Nephrology
  • Vascular Medicine
  • Radiology

Background:

  • The nutcracker phenomenon (NCP) involves compression of the left renal vein between the aorta and superior mesenteric artery.
  • Clinical manifestations include hematuria, abdominal pain, flank pain, and pelvic/scrotal discomfort secondary to varicocele or ovarian vein syndrome.

Observation:

  • This report presents two patients with orthostatic proteinuria attributed to NCP.
  • One patient exhibited posterior NCP and an asymptomatic varicocele detected via ultrasonography.

Findings:

  • Nutcracker phenomenon was identified as the underlying cause of orthostatic proteinuria in the presented cases.
  • Ultrasonography proved effective in detecting NCP and associated findings like varicocele.

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Implications:

  • NCP should be considered in the differential diagnosis for patients presenting with proteinuria and hematuria.
  • Early diagnosis and recognition of NCP are crucial for appropriate patient management and preventing complications.