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Open Access Research article

Diagnostic imaging strategy for MDCT- or MRI-detected breast lesions: use of targeted sonography

Satoko Nakano1*, Masahiko Ohtsuka1, Akemi Mibu2, Masato Karikomi3, Hitomi Sakata4 and Masahiro Yamamoto4

Author Affiliations

1 Department of Surgery, Kawaguchi Municipal Medical Center, 180 Nishi-araijyuku, Kawaguchi-city, Saitama, 333-0833, Japan

2 Department of Laboratory, Kawaguchi Municipal Medical Center, Kawaguchi-city, Japan

3 Department of Radiology, Kawaguchi Municipal Medical Center, Kawaguchi-city, Japan

4 Department of Pathology, Kawaguchi Municipal Medical Center, Kawaguchi-city, Japan

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BMC Medical Imaging 2012, 12:13  doi:10.1186/1471-2342-12-13

Published: 12 June 2012

Abstract

Background

Leading-edge technology such as magnetic resonance imaging (MRI) or computed tomography (CT) often reveals mammographically and ultrasonographically occult lesions. MRI is a well-documented, effective tool to evaluate these lesions; however, the detection rate of targeted sonography varies for MRI detected lesions, and its significance is not well established in diagnostic strategy of MRI detected lesions. We assessed the utility of targeted sonography for multidetector-row CT (MDCT)- or MRI-detected lesions in practice.

Methods

We retrospectively reviewed 695 patients with newly diagnosed breast cancer who were candidates for breast conserving surgery and underwent MDCT or MRI in our hospital between January 2004 and March 2011. Targeted sonography was performed in all MDCT- or MRI-detected lesions followed by imaging-guided biopsy. Patient background, histopathology features and the sizes of the lesions were compared among benign, malignant and follow-up groups.

Results

Of the 695 patients, 61 lesions in 56 patients were detected by MDCT or MRI. The MDCT- or MRI-detected lesions were identified by targeted sonography in 58 out of 61 lesions (95.1%). Patients with pathological diagnoses were significantly older and more likely to be postmenopausal than the follow-up patients. Pathological diagnosis proved to be benign in 20 cases and malignant in 25. The remaining 16 lesions have been followed up.

Lesion size and shape were not significantly different among the benign, malignant and follow-up groups.

Conclusions

Approximately 95% of MDCT- or MRI-detected lesions were identified by targeted sonography, and nearly half of these lesions were pathologically proven malignancies in this study. Targeted sonography is a useful modality for MDCT- or MRI-detected breast lesions.