Intraperitoneal abscesses: diagnostic accuracy of and appearances at MR imaging

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T C Noone1, R C Semelka, S Worawattanakul

  • 1Department of Radiology, University of North Carolina, Chapel Hill 27599-7510, USA.

Radiology
|July 29, 1998
PubMed
Abstract

Insights

Magnetic resonance (MR) imaging accurately detects intraperitoneal abscesses. This study shows MR imaging has high sensitivity and specificity for diagnosing these infections.

Area of Science:

  • Radiology
  • Abdominal Imaging

Background:

  • Intraperitoneal abscesses are serious infections requiring prompt diagnosis.
  • Accurate imaging is crucial for effective treatment planning.

Purpose of the Study:

  • To prospectively evaluate the diagnostic accuracy of magnetic resonance (MR) imaging for intraperitoneal abscesses.
  • To describe the characteristic appearances of intraperitoneal abscesses on MR imaging.

Main Methods:

  • Sixty-seven patients with suspected intraperitoneal abscesses underwent MR imaging.
  • MR images were interpreted, and findings were correlated with surgical, histopathologic, and laboratory results.

Main Results:

  • MR imaging identified intraperitoneal abscesses in 22 of 67 patients (33%).
  • The technique demonstrated high diagnostic performance: 100% sensitivity, 94% specificity, and 96% accuracy.
  • Abscesses were best visualized with gadolinium-enhanced T1-weighted fat-suppressed sequences showing peripheral rim enhancement.

Conclusions:

  • MR imaging is a highly accurate tool for evaluating patients with suspected acute intraperitoneal abscesses.
  • The characteristic imaging findings on MR aid in differentiating abscesses from other fluid collections.

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