Chulalongkorn Medical Journal


Background : Sclerosing adenosis and radial scar of the breast are benignconditions that may be mistaken for carcinoma on imaging andthey are also considered independent risk for breast cancer.Objective : To demonstrate mammographic and ultrasonographic patterns ofsclerosing adenosis and radial scar and to determinatethe coexisting of both diseases to synchronous breast cancer.Material and Methods : Retrospective analysis of the pathology confirmed 80 sclerosingadenosis foci and 23 radial scar foci was performed. Themammographic and ultrasound features of each focus wereanalyzed. Coexisting of breast malignancy is also recorded.The result was reported descriptively.Results : - Mammographic findings of sclerosing adenosis are 34 foci(47.22%) of mass, 35 foci (48.61%) of abnormal calcifications,8 foci (11.11%) of focal distortion, 8 foci (11.11%) of focal asymmetryand no mammographic abnormality in 12 foci (16.67%).Ultrasonographic findings of sclerosing adenosis are 68 foci(86.07%) of mass, 7 foci (8.66%) of calcifications, 7 foci (8.86%)of focal thick duct and no sonographic abnormality in 8 foci(10.13%).- Mammographic findings of radial scar are 7 foci (30.43%) ofmass, 9 foci (39.13%) of abnormal calcifications, 6 foci (26.09%)of focal distortion, 6 foci (26.09%) of focal asymmetry and nomammographic abnormality in 2 foci (8.70%). Ultrasonographicfindings of radial scar are 15 foci (68.18%) of mass, 2 foci (9.09%)of calcifications, 1 focus (4.34%) of focal shadowing and 6 foci(27.27%) without sonographic abnormality. Neither mammographicnor sonographic abnormality is seen in one radial scar. Mostlesions in our study are categorized as BI-RADS 4 and 5. Coexistingbreast cancer with sclerosing adenosis and radial scar are 17.5%and 8.69%, respectively.Conclusion : There are varying appearances of sclerosing adenosis and radialscar on mammographic and ultrasound. Both sclerosing adenosisand radial scar are usually categorized as BI-RADS 4 and 5.There is no definite imaging characteristics of which can distinguishthem from malignant lesion. Coexisting of breast cancer in thesepatients is higher than usual screening mammogram.


Faculty of Medicine, Chulalongkorn University

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