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  • Title: Morphological manifestations of nonpuerperal mastitis on magnetic resonance imaging.
    Author: Liu H, Peng W.
    Journal: J Magn Reson Imaging; 2011 Jun; 33(6):1369-74. PubMed ID: 21591005.
    Abstract:
    PURPOSE: To investigate the morphological features of nonpuerperal mastitis on magnetic resonance imaging (MRI). MATERIALS AND METHODS: MRI results of 27 patients diagnosed with nonpuerperal mastitis were retrospectively analyzed according to the Breast Imaging Reporting and Data System (BI-RADS). RESULTS: According to the enhanced MRI results, 22 cases presented as nonmass-like enhancements and five cases presented as masses. For the 22 nonmass-like enhancement lesions, one case showed as a homogeneous enhancement and 21 cases showed as heterogeneous enhancements. In the 21 heterogeneous enhancement cases, 13 contained lesions of rim-like enhancement. With regard to the number of lesions with rim-like enhancement, 11 presented as multiple and two as single. In the five mass lesions, three presented as rim enhancements. Indications of rim or rim-like enhancement accounted for 59% (16/27) of all cases. For the 16 cases that presented with signs of rim or rim-like enhancement, the central hypointensity area surrounded by enhanced rim or rim-like entity showed as hyperintensity in 14 cases and hypointensity or heterointensity in two cases on T2-weighted imaging. CONCLUSION: On contrast-enhanced MRI, most nonpuerperal mastitis presented as nonmass-like lesion with heterogeneous signal intensity. The observation of signs of rim or rim-like enhancement on contrast-enhanced MRI with central hypointensity areas showing as hyperintensity on T2-weighted imaging is suggestive of the possibility of nonpuerperal mastitis.
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