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KMID : 0858520100140010021
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Journal of the Korean Society of Magnetic Resonance in Medicine
2010 Volume.14 No. 1 p.21 ~ p.30
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Imaging Features of Mucinous Breast Carcinoma
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Han Hye-Jung
Kim Sung-Hun
Cha Eun-Suk
Kim Hyun-Sook
Kang Bong-Joo
Choi Jae-Jung
Lee Jee-Hye
Lee Ah-Won
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Abstract
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Purpose: To examine the imaging findings of mucinous breast carcinoma and to evaluate the difference in these findings based on the histopathologic grade.
Materials and Methods : We retrospectively analyzed the imaging features according to BI-RADS in 29 patients with surgically proven mucinous carcinoma. The histopathologic grade was classified as well-differentiated, moderately-differentiated and poorly-differentiated. Based on these criteria, the differences in imaging findings were statistically analyzed.
Results: Mammography was available in 20 cases, which contained 17 mass lesions (85%) and 3 cases of normal findings. On ultrasonography (27 cases), mucinous carcinoma was observed as a mass with an oval shape (59.3%), a microlobulated margin (55.6%) or an inhomogeneous isoechogenicity (74.1%). On MRI (21 cases), mucinous carcinoma was commonly observed to have a lobular shape (76%), smooth margin (86%) or heterogeneous contrast-enhancement (61.9%). On the kinetic curve, there was a delayed wash-out pattern (52.3%). There were no significant differences in the imaging findings for each histopathologic grade except that a welldifferentiated tumor had an abrupt interface.
Conclusion: A well-differentiated mucinous carcinoma tended to have an abrupt interface on ultrasonography, as compared with the moderately-differentiated one. Mucinous carcinoma showed a heterogeneous enhancement and a delayed washout kinetic curve pattern on dynamic MRI.
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KEYWORD
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Adenocarcinoma, mucinous, Breast neoplasms, Mammography, Ultrasonography, Magnetic resonance imaging (MRI)
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