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KMID : 1114620100070010008
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Journal of the Korean Society for Breast Screening
2010 Volume.7 No. 1 p.8 ~ p.15
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Efficacy of Additional Studies for Focal Asymmetry of Screening Mammography: Spot Compression and Magnification View and Targeted US
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Hahn Soo-Yeon
Shin Jung-Hee
Han Boo-Kyung
Ko Eun-Young
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Abstract
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Purpose: To evaluate the efficacy of spot compression and magnification view and targeted ultrasonography (US) for focal asymmetry detected on screening mammography.
Materials and Methods: From November, 2006 to March, 2008, 28 women who performed spot compression and magnification view and targeted US for focal asymmetry detected on screening mammography and were followed up or histologically confirmed were included. Focal asymmetries detected on screening mammography were divided into true or pseudolesions with spot compression and magnification view and targeted US. The results were compared with follow-up or histological results. We investigated whether the results of two diagnostic modalities agree with final references.
Results: Of 28 cases, four cases (14%) were true lesions and 26 cases (86%) were pseudolesions. On spot compression and magnification view, five cases (18%) were diagnosed as true lesions and 23 cases (82%) as pseudolesions. On targeted US, four cases (14%) were diagnosed as true lesions and 24 cases (86%) as pseudolesions. Five cases (18%) diagnosed with spot compression and magnification view disagreed with the final results. Of these five cases, three cases were misdiagnosed as true lesions and two as pseudolesions. However, there was agreement for all cases diagnosed with targeted US. Four true lesions included invasive ductal carcinoma, sclerosing adenosis, fat necrosis, and cyst. Most common finding of pseudolesions was parenchymal summation.
Conclusion: Spot compression and magnification view and targeted US for focal asymmetry detected on screening mammography are helpful as additional studies to differentiate true lesion from pseudolesion. However, targeted US has a higher agreement with final diagnosis than spot compression and magnification view and helps characterize the lesion.
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KEYWORD
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Screening mammography, Focal asymmetry, Pseudolesion
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