Benign Adenomyoepithelioma of the Breast: Imaging Characteristics
This study aimed to evaluate the radiological and clinical characteristics of benign adenomyoepitheliomas of the breast. Over the last 20 years, 120 patients were histologically diagnosed with breast adenomyoepithelioma (AME) at our institution. We excluded 43 patients who were incidentally diagnose...
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Published in | Journal of the Korean Society of Radiology Vol. 84; no. 2; pp. 398 - 408 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Korea (South)
The Korean Society of Radiology
01.03.2023
대한영상의학회 |
Subjects | |
Online Access | Get full text |
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Summary: | This study aimed to evaluate the radiological and clinical characteristics of benign adenomyoepitheliomas of the breast.
Over the last 20 years, 120 patients were histologically diagnosed with breast adenomyoepithelioma (AME) at our institution. We excluded 43 patients who were incidentally diagnosed during mastectomy for breast cancer, 28 who underwent percutaneous biopsy without further excision, and 8 who had biopsy-confirmed benign AME and were found to have another pathology after complete excision. We retrospectively reviewed the clinical records and radiological findings of the remaining 41 patients with histologically diagnosed benign breast AMEs after complete excision.
All 41 patients underwent US; 38 underwent mammography (MG) and US; and 18 underwent MG, US, and MRI. MG detected 38 cases with a round or oval shape (56%), and mass (89%), were non-circumscribed (62%), hyperdense (53%), and without microcalcifications (95%). Breast US revealed suspicious masses (98%) with a non-circumscribed margin (66%), hypoechogenicity (43%), and intratumoral vascularity (63%). All lesions on breast MRI showed suspicious masses (100%) with ill-defined margins (61%), and 84% showed wash-out kinetics. Benign AMEs showed suspicious features of Breast Imaging Reporting and Data System (BI-RADS) category 4 or 5 in 83%-95% of the MG, US, and MRI. Sixteen of the 41 cases were misdiagnosed on the initial core needle biopsy and two were diagnosed as malignancy.
Benign breast AME often shows suspicious radiological features mimicking a malignant mass on MG, US, and MRI. Differentiating benign AME from other pathologies might be difficult on core needle biopsy, and complete excision is needed for a correct diagnosis. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 https://doi.org/10.3348/jksr.2022.0021 |
ISSN: | 1738-2637 2951-0805 2288-2928 |
DOI: | 10.3348/jksr.2022.0021 |