J Korean Radiol Soc.  2006 Aug;55(2):191-198. 10.3348/jkrs.2006.55.2.191.

Contrast Enhanced MRI Findings of Ductal Carcinoma in Situ

• Kang BJ
• Cha ES
• Kim HS
• Shu YJ
• Choi HJ

• KMID: 2103819
• DOI: http://doi.org/10.3348/jkrs.2006.55.2.191

Abstract

PURPOSE
The purpose of this study is to describe characteristic contrast enhanced MR mammographic findings of ductal carcinoma in situ (DCIS) and also DCIS with microinvasion.
MATERIALS AND METHODS
From January 2000 to July 2005, 32 women with 33 lesions affected by DCIS or DCIS with microinvasion underwent contrast enhanced MRI, and they were then retrospectively evaluated. All the patients had previously undergone mammography and ultrasonography. All the findings of mammography, ultrasonography (US), and MRI were analyzed by using an ACR BI-RADS lexicon.
RESULTS
All 33 cases were enhanced on the enhanced MR images. A smooth margined homogeneous enhanced mass was seen in the two (2/33) cases, and nonmass enhancement was seen in 31 (31/33) cases. Among the non-mass enhancement, focal enhancement (7/31), ductal enhancement (5/31), segmental enhancement (9/31), and regional enhancement (10/31) were observed. On the kinetic study, a wash-out pattern (10/33), a plateau pattern (20/33), and a persistent pattern (3/33) were demonstrated. No significant differences were noted between the pure and microinvasive DCIS.
CONCLUSION
There is no significant difference between pure and microinvasive DCIS. However, contrast enhanced MR images can demonstrate occult foci, multifocal lesion and the tumor extent of DCIS on mammogram or ultrasonogram.

Keyword

Breast, MR; Breast neoplasms

MeSH Terms

Breast Neoplasms
Carcinoma, Ductal*
Carcinoma, Intraductal, Noninfiltrating*
Female
Humans
Magnetic Resonance Imaging*
Mammography
Retrospective Studies
Ultrasonography