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KMID : 1103720180790060303
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Journal of the Korean Society of Radiology
2018 Volume.79 No. 6 p.303 ~ p.310
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Incidental Breast Lesions on Chest CT: Clinical Significance and Differential Features Requiring Referral
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Choi Yun-Jung
Kim Tae-Hoon
Cha Yoon-Jin
Son Eun-Ju
Gweon Hye-Mi
Park Chul-Hwan
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Abstract
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Purpose: To evaluate the CT features of incidental breast lesions on chest CT and to suggest useful criteria for referral to a specialized breast unit.
Materials and Methods: Between May 2009 and April 2014, enhanced chest CT examination reports containing the key word ‘breast’ were reviewed retrospectively. Patients who had incidental breast lesion and were referred to a specialized breast unit and then underwent pathological confirmation or follow-up over a 1-year period were included. Finally, 86 patients (all female, mean age, 48.9 ± 12.6 years) were enrolled. Two radiologists evaluated lesion characteristics, including size, shape, margins, and enhancement. The correlations between the CT features and pathologies were evaluated, and the diagnostic accuracy of CT features in various combinations was assessed.
Results: Among the CT features, irregular shape, non-circumscribed margin, and high contrast enhancement were different between malignant and benign lesions (p < 0.05). The combination of non-circumscribed margin and high contrast enhancement had the highest accuracy (97.7%).
Conclusion: Reliable CT features for incidental malignant breast masses are irregular shape, non-circumscribed margin, and high contrast enhancement. The combination of non-circumscribed margin and high contrast enhancement could help distinguish incidental malignant breast lesions and indicate referral to a specialized breast unit.
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KEYWORD
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Breast, Neoplasm, Tomography, X-Ray Computed, Incidental Findings
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