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Hypoechoic fat: a sonographic pitfall

G M Spencer1, D J Rubens, D J Roach

  • 1Department of Radiology, University of Rochester Medical Center, NY 14642-8648, USA.

AJR. American Journal of Roentgenology
|May 1, 1995
PubMed
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Fat typically appears bright on ultrasounds, but can sometimes appear dark. This study highlights cases of dark fat in various body areas to help prevent misdiagnosis.

Area of Science:

  • Medical imaging
  • Diagnostic ultrasound
  • Radiology

Background:

  • Fat is classically depicted as hyperechoic on sonograms due to its acoustic impedance.
  • However, specific fat types in certain anatomical sites can present as hypoechoic.
  • Literature documents hypoechoic fat in renal and ovarian contexts.

Purpose of the Study:

  • To present cases of hypoechoic fat in diverse anatomical locations.
  • To underscore the diagnostic significance of recognizing hypoechoic fat.
  • To reduce the incidence of misinterpretations and erroneous diagnoses.

Main Methods:

  • Case series presentation.
  • Review of sonographic findings in multiple anatomical locations.
  • Correlation of imaging findings with clinical context.

Related Experiment Videos

Main Results:

  • Demonstration of hypoechoic fat collections in various anatomical sites.
  • Illustration of the spectrum of sonographic appearances for fat.
  • Highlighting potential diagnostic pitfalls.

Conclusions:

  • Hypoechoic fat is a recognized sonographic finding in specific locations.
  • Awareness of these presentations is crucial for accurate diagnosis.
  • This recognition aids in differentiating fat from other pathologies.