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Published on: December 15, 2014
Ductal carcinoma in situ: correlations between high-resolution magnetic resonance imaging and histopathology
Yoshihide Kanemaki1, Yasuyuki Kurihara, Kyoko Okamoto
1Department of Radiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, 216-8511, Japan. yoshihid@tc4.so-net.ne.jp
Purpose:
The aim of this retrospective study was to determine and correlate contrast-enhanced areas and multiple internal dark dots and lines on high-resolution magnetic resonance imaging (HR-MRI) with findings in surgical specimens of ductal carcinoma in situ (DCIS) and to evaluate the ability of HR-MRI to detect DCIS lesions and clarify HR-MRI features characteristic of DCIS.
Materials And Methods:
This study retrospectively reviewed 11 patients diagnosed with DCIS who had undergone HR-MRI. Pathological findings and results of HR-MRI were compared, and causes of periductal enhancements were analyzed.
Results:
In all patients, HR-MRI using microscopic coils revealed ductally, segmentally, or regionally enhanced areas containing multiple dark dots and lines, representing local enhancement of stroma adjacent to the mammary duct containing DCIS. Neovascularization, infiltration of inflammatory cells, and focal edema occurred in enhanced periductal stroma. Poorly enhanced linear or dot-like structures correlated with dilated mammary ducts displaying necrosis and tumor impaction.
Conclusion:
DCIS was successfully depicted on HR-MRI using a microscopy coil in all 11 cases. Ductal, segmental, or regional areas of enhancement with multiple dark dots and lines on HR-MRI corresponded to mammary glands containing DCIS with periductal enhancement.
