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Endometrial polyps: MR imaging features

Soichiro Hase1, Akihito Mitsumori, Ryota Inai

  • 1Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan. hasemantaro@yahoo.co.jp

Acta Medica Okayama
|December 21, 2012
PubMed

Insights

Magnetic resonance imaging (MRI) effectively identifies endometrial polyps by analyzing specific features like fibrous cores and signal intensities. These MRI characteristics aid in differentiating polyps from other uterine lesions.

Area of Science:

  • Radiology
  • Gynecologic Imaging

Background:

  • Endometrial polyps are common benign growths.
  • Accurate differentiation from other endometrial lesions is crucial for appropriate management.
  • Magnetic resonance imaging (MRI) offers detailed anatomical and functional information.

Purpose of the Study:

  • To assess the diagnostic value of MRI features for identifying endometrial polyps.
  • To differentiate endometrial polyps from other endometrial pathologies using MRI.

Main Methods:

  • Retrospective review of MRI scans from 40 patients with pathologically confirmed endometrial polyps.
  • Analysis of lesion characteristics: size, shape, margins, internal structure, signal intensity, and contrast enhancement.
  • Evaluation of T2-weighted, diffusion-weighted, and dynamic contrast-enhanced T1-weighted images.

Main Results:

  • A central fibrous core was present in 75% of polyps.
  • Iso-to low signal intensity on T2-weighted images (90%) and low signal intensity on diffusion-weighted images (80%) were common.
  • Strong or moderate enhancement on T1-weighted images (70%) and early enhancement patterns (80%) were observed.
  • Specific dynamic enhancement patterns (rapid/persistent or gradually increasing) were noted.

Conclusions:

  • Specific MRI findings, including central fibrous core, signal intensities, and enhancement patterns, are valuable for diagnosing endometrial polyps.
  • These MRI characteristics can help distinguish endometrial polyps from other endometrial lesions.
  • MRI plays a significant role in the non-invasive evaluation of endometrial pathologies.

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