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[MRI of the breast. Techniques and current values]
1Département d'imagerie médicale, polyclinique Bordeaux Nord Aquitaine, 15-33, rue Claude-Boucher, 33300 Bordeaux, France. rene.gilles@waika9.com
Summary
Breast MRI and PET imaging offer a detailed look at breast tumors by examining blood vessel growth. While MRI is highly sensitive for invasive cancers, its accuracy for ductal carcinoma in situ varies, with specificity challenges from benign conditions.
Area of Science:
- Oncology
- Radiology
- Medical Imaging
Background:
- Breast MRI and PET imaging provide a physiopathological approach to breast tumors by analyzing tumoral angiogenesis.
- Published series consistently report high sensitivity for breast MRI in detecting invasive breast cancers.
Purpose of the Study:
- To summarize the diagnostic capabilities of breast MRI and PET in evaluating breast tumors.
- To outline the clinical indications for utilizing these advanced imaging modalities in breast cancer management.
Main Methods:
- Review of published series on breast Magnetic Resonance imaging (MRI) and Positron Emission Tomography (PET) for breast tumor assessment.
- Analysis of reported sensitivity and specificity rates for detecting various breast cancer types, including invasive cancers and ductal carcinoma in situ.
Main Results:
- Breast MRI demonstrates high sensitivity for invasive breast cancers.
- Sensitivity for detecting ductal carcinoma in situ ranges from 60-85%, with specificity varying between 60-97% due to entities like fibroadenomas and fibrocystic disease.
Conclusions:
- Breast MRI and PET are valuable tools for assessing breast tumors through tumoral angiogenesis.
- Clinical applications include diagnosing local relapses, evaluating neoadjuvant chemotherapy response, assessing isolated axillary lymphadenopathy, pre-operative staging, and monitoring breast prosthesis.