Endometriosis MR mimickers: T1-hyperintense lesions
Edouard Ruaux1, Stéphanie Nougaret2, Marie Gavrel3
1Department of Radiology, Hospices Civils de Lyon, Lyon Sud University Hospital, Lyon 1 Claude Bernard University, 165 Chemin du Grand Revoyet, EMR 3738, 69495, Pierre Bénite, France.
Insights Into Imaging
|January 24, 2024
Summary
Magnetic resonance imaging (MRI) for endometriosis has a 10% false-positive rate. Radiologists must differentiate T1-hyperintense endometriotic lesions from mimics like hemorrhage and artifacts to prevent misdiagnosis.
Area of Science:
- Gynecological disease
- Medical imaging
- Radiology
Background:
- Endometriosis is a chronic, disabling gynecological disease affecting women of reproductive age.
- Magnetic resonance imaging (MRI) is crucial for diagnosing and managing endometriosis.
- MRI offers high sensitivity but can yield false-positive results, decreasing specificity.
Purpose of the Study:
- To educate radiologists on MRI criteria for endometriosis.
- To highlight potential pitfalls and differential diagnoses for T1-hyperintense abnormalities.
- To reduce false-positive MRI findings in endometriosis diagnosis.
Main Methods:
- Review of MRI criteria for endometriosis diagnosis.
- Analysis of conditions causing T1-hyperintense lesions mimicking endometriosis.
- Discussion of differential diagnoses for T1-hyperintense abnormalities.
Main Results:
- MRI in endometriosis has a 10% false-positive rate, potentially leading to misdiagnosis.
- T1-hyperintense lesions in endometriosis can be mimicked by hemorrhage, high protein content, lipids, and artifacts.
- Accurate differentiation of T1-hyperintense lesions is critical for patient management.
Conclusions:
- Radiologists need comprehensive knowledge to interpret T1-hyperintense MRI findings in endometriosis.
- Recognizing mimics of T1-hyperintense endometriotic lesions is essential for accurate diagnosis.
- Reducing false positives improves patient care by avoiding unnecessary interventions.
