Pediatric Nephrotic Syndrome Differential Diagnoses

  • Author: Jerome C Lane, MD; Chief Editor: Craig B Langman, MD   more...
 
Updated: Nov 11, 2011
 
 

Diagnostic Considerations

Acute kidney failure (AKF) is a rare complication of idiopathic nephrotic syndrome. Fever, rash, arthralgia and eosinophilia with a "bland" urinalysis (minimal cellular elements) in the presence of AKF are typical for acute interstitial nephritis. However, obvious clinical symptoms may be absent except for the AKF and unremarkable urinalysis. Gross hematuria, flank pain, and thrombocytopenia may be signs of renal vein thrombosis. Hemoconcentration in the patient with anasarca might indicate intravascular volume depletion.

Differential Diagnoses

Proceed to Workup
 
 
Contributor Information and Disclosures
Author

Jerome C Lane, MD  Assistant Professor of Pediatrics, Northwestern University, The Feinberg School of Medicine; Attending Physician, Department of Pediatrics, Division of Kidney Diseases, Children's Memorial Hospital

Disclosure: Nothing to disclose.

Chief Editor

Craig B Langman, MD  The Isaac A Abt, MD, Professor of Kidney Diseases, Northwestern University, The Feinberg School of Medicine; Division Head of Kidney Diseases, Children's Memorial Hospital

Craig B Langman, MD is a member of the following medical societies: American Academy of Pediatrics, American Society of Nephrology, and International Society of Nephrology

Disclosure: NIH Grant/research funds None; Raptor Pharmaceuticals, Inc Grant/research funds None; Alexion Pharmaceuticals, Inc. Grant/research funds None

Additional Contributors

Laurence Finberg, MD Clinical Professor, Department of Pediatrics, University of California, San Francisco, School of Medicine and Stanford University School of Medicine

Laurence Finberg, MD is a member of the following medical societies: American Medical Association

Disclosure: Nothing to disclose.

Adrian Spitzer, MD Clinical Professor Emeritus, Department of Pediatrics, Albert Einstein College of Medicine

Adrian Spitzer, MD is a member of the following medical societies: American Academy of Pediatrics, American Federation for Medical Research, American Pediatric Society, American Society of Nephrology, American Society of Pediatric Nephrology, International Society of Nephrology, and Society for Pediatric Research

Disclosure: Nothing to disclose.

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

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Schematic drawing of the glomerular barrier. Podo = podocytes; GBM = glomerular basement membrane; Endo = fenestrated endothelial cells; ESL = endothelial cell surface layer (often referred to as the glycocalyx). Primary urine is formed through the filtration of plasma fluid across the glomerular barrier (arrows); in humans, the glomerular filtration rate (GFR) is 125 mL/min. The plasma flow rate (Qp) is close to 700 mL/min, with the filtration fraction being 20%. The concentration of albumin in serum is 40 g/L, while the estimated concentration of albumin in primary urine is 4 mg/L, or 0.1% of its concentration in plasma. Reproduced from Haraldsson et al, Physiol Rev 88: 451-487, 2008, and by permission of the American Physiological Society (www.the-aps.org).
 
 
 
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