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Related Experiment Videos

Septated urinomas in the neonate.

K A Feinstein1, S K Fernbach

  • 1Department of Radiology, Northwestern University Medical School, Chicago, IL.

AJR. American Journal of Roentgenology
|November 1, 1987
PubMed
Summary

Perirenal urinomas, typically sonolucent, can present with complex septations in neonates due to urinary tract obstruction. Early recognition of these septated collections is crucial for diagnosis and management.

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Area of Science:

  • Pediatric Radiology
  • Neonatal Urology
  • Medical Imaging

Background:

  • Perirenal urinomas are fluid collections resulting from urinary extravasation due to obstruction.
  • Traditionally, urinomas are characterized as predominantly sonolucent on imaging.
  • Complex or septated urinomas are less commonly described, particularly in neonates.

Purpose of the Study:

  • To describe the imaging characteristics of a specific subset of perirenal urinomas in neonates.
  • To highlight the association of septated perirenal urinomas with specific urinary tract obstructions.
  • To raise awareness of potential diagnostic challenges posed by these complex collections.

Main Methods:

  • Retrospective review of imaging studies over a 2-year period.
  • Identification of neonates with perirenal urinomas.
  • Analysis of urinoma morphology, presence of septations, and associated urinary tract abnormalities.

Main Results:

  • Five neonates with perirenal urinomas featuring multiple, marked septations were identified.
  • Four cases were associated with posterior urethral valves.
  • One case was associated with ureteropelvic junction obstruction.

Conclusions:

  • Perirenal urinomas in neonates can exhibit complex, septated morphology.
  • Septated urinomas are associated with significant urinary tract obstructions like posterior urethral valves and ureteropelvic junction obstruction.
  • Diagnostic confusion can occur if the kidney is not identified, septations are missed, or obstruction is not recognized.

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