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KMID : 1147320160030010024
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Journal of Surgical Ultrasound
2016 Volume.3 No. 1 p.24 ~ p.29
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Accuracy of Preoperative Tumor Size Assessment on Ultrasonography and Magnetic Resonance Imaging in Breast Cancer
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Kang Sang-Yull
Choi Eun-Jung
Youn Hyun-Jo
Jung Sung-Hoo
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Abstract
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Purpose: Ultrasonography (US) is a traditional modality for preoperative estimation of tumor size in patients with breast cancer; magnetic resonance imaging (MRI) is more recent but not as well studied. We compared the accuracy of US and MRI for preoperative assessment of tumor size in breast cancer presenting as a mass.
Methods: Records from patients who underwent breast cancer surgery in 2013 and a tumor was detected on both (US and MRI) imaging modalities were retrospectively reviewed for maximum tumor size measurements. Patients with only microcalcification on imaging modalities and those who had undergone neoadjuvant chemotherapy were excluded. Tumor size measurements obtained on the two imaging modalities were compared for accuracy with those obtained during the final pathological examination.
Results: A total of 120 breast cancer patients were included in this study. Of the 120 breast cancers with performance of both imaging modalities, 108 (90.0%) were infiltrating ductal carcinoma, 6 (5.0%) were infiltrating lobular carcinoma, and 6 (5.0%) were other histologic type. The mean tumor size measured on MRI was significantly greater than that measured on pathology, whereas the sizes measured on US did not show statistically significant difference from those measured on pathology. Tumor size measured on MRI was greater than that measured on US.
Conclusion: Preoperative MRI overestimated tumor size. Measurement obtained on US was more accurate than that obtained on MRI.
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KEYWORD
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Ultrasonography, Magnetic resonance imaging, Breast, Size
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