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Related Concept Videos

Gallbladder01:17

Gallbladder

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The gallbladder is a small, pear-shaped organ that plays a crucial role in our digestive system. Measuring about 10 cm in length, it is comparable in size to a kiwi fruit and is located in a hollow area on the lower surface of the liver. The gallbladder's primary function is to store and concentrate bile, a fluid produced by the liver that aids in digestion.
The gallbladder's anatomy consists of three regions: the fundus, body, and neck. Extending from the neck, the cystic duct joins...
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Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
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Tumefactive gallbladder sludge: the MRI findings.

M Seong1, T W Kang1, M Kim1

  • 1Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.

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|February 15, 2016
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Summary

Tumefactive gallbladder sludge appears as a mass on ultrasound but is benign. Magnetic resonance imaging (MRI) shows it is T1-hyperintense without enhancement or diffusion restriction, distinguishing it from cancer.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Gastroenterology

Background:

  • Gallbladder sludge is common, but tumefactive sludge can mimic malignancy on ultrasound.
  • Differentiating tumefactive sludge from gallbladder cancer is crucial for appropriate patient management.

Purpose of the Study:

  • To evaluate the imaging characteristics of tumefactive gallbladder sludge using conventional and diffusion-weighted magnetic resonance imaging (MRI).

Main Methods:

  • Retrospective analysis of 12 patients with tumefactive gallbladder sludge who underwent MRI.
  • Collected data included clinical features, signal intensities on T1- and T2-weighted images, and enhancement patterns on dynamic MRI sequences.
  • Diffusion-weighted imaging was also assessed for diffusion restriction.

Main Results:

  • Tumefactive gallbladder sludge presented as a well-defined, mass-like lesion.
  • It demonstrated T1-weighted hyperintensity (91.7%) and variable T2-weighted signal intensity.
  • Most lesions showed no enhancement (90%) and no diffusion restriction on MRI.
  • Follow-up ultrasound showed lesion resolution or decrease in size in all cases.

Conclusions:

  • MRI findings, including T1-weighted hyperintensity, lack of enhancement, and absence of diffusion restriction, are key to differentiating tumefactive gallbladder sludge from gallbladder cancer.
  • These MRI features aid in avoiding unnecessary surgical intervention for benign tumefactive sludge.