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Medullary sponge kidney

Giovanni Gambaro1, Francesco M Danza, Antonia Fabris

  • 1Nephrology Division, Department of Internal Medicine and Medical Specialties, Columbus-Gemelli University Hospital, Rome, Italy. giovanni.gambaro@rm.unicatt.it

Current Opinion in Nephrology and Hypertension
|May 18, 2013
PubMed
Abstract

Insights

Medullary sponge kidney (MSK) is not benign and has a genetic basis. Research highlights its tubular defects, diverse clinical presentations, and the need for better diagnosis and characterization.

Area of Science:

  • Nephrology
  • Genetics
  • Pediatric Nephrology

Background:

  • Medullary sponge kidney (MSK), first described in 1939, was historically underestimated due to perceived low prevalence and benign nature.
  • Recent studies challenge these views, indicating MSK warrants greater clinical and research attention.
  • This review synthesizes current understanding of MSK, addressing its genetic underpinnings and clinical spectrum.

Purpose of the Study:

  • To review recent advancements in understanding medullary sponge kidney (MSK).
  • To explore the genetic basis and pathophysiological mechanisms of MSK.
  • To discuss the evolving clinical phenotypes and diagnostic challenges associated with MSK.

Main Methods:

  • Literature review of recent studies on medullary sponge kidney (MSK).
  • Analysis of genetic research identifying the molecular basis of MSK.
  • Synthesis of clinical data describing the spectrum of MSK manifestations.

Main Results:

  • MSK is linked to genetic factors disrupting the ureteric bud-metanephric mesenchyme interface.
  • Associated tubular defects, notably distal renal tubular acidosis, contribute to complications like metabolic bone disease.
  • Recognized clinical profiles range from asymptomatic to severe pain, alongside typical stone disease.

Conclusions:

  • Comprehensive clinical characterization of MSK patients is essential.
  • Further investigation into the genetic etiology of MSK is warranted.
  • Development of reliable diagnostic methods for MSK is needed.

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