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IF値: 1.878(2021年)→1.8(2022年)


Journal of Medical Ultrasonics

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2000 - Vol.27

Vol.27 No.06

Case Report(症例報告)

(0903 - 0908)

乳腺の腺筋上皮腫 (adenomyoepithelioma) の1例

A Case of Adenomyoepithelioma of the Breast

浅利 貞毅1, 山崎 元1, 山崎 芳郎1, 奥野 慎一郎1, 桑田 圭司1, 山崎 大2, 小林 晏2

Sadaki ASARI1, Hajime YAMASAKI1, Yoshio YAMASAKI1, Shinichirou OKUNO1, Keiji KUWATA1, Masaru YAMASAKI2, Yasushi KOBAYASHI2

1大阪厚生年金病院外科, 2同病理科

1Department of Surgery, Osaka Koseinenkin Hospital, 2Department of Pathology, Osaka Koseinenkin Hospital

キーワード : Adenomyoepithelioma, Breast, Mammography, Ultrasonography

The patient was a 66-year-old woman with adenomyoepithelioma in the lower outer quadrant of the left breast. A 2.0-cm mass was discovered in the left breast during abdominal CT examination for colonic polyps. Ultrasonographic findings indicated a malignant tumor with an irregular shape, rough margin, heterogeneous internal echo, and high D/W ratio. Mammography, on the other hand, suggested a benign tumor with a clear margin and homogeneous shadow, but no spicules or calcification. Aspiration cytology showed a class Ⅲ tumor. To make a definitive diagnosis, excisional biopsy was performed under general anesthesia, and there were no malignant features in a frozen section. The final pathologic diagnosis was adenomyoepithelioma. Ultrasonography may have shown a malignant pattern with hypoechoic, coarse, and heterogeneous internal echoes because of the histologic mixture of epithelial and myoepithelial cells. We conclude that aspiration cytology, core needle biopsy, and excisional biopsy should be used to make the final diagnosis of breast tumor and avoid unnecessary surgery when ultrasonographic findings do not agree with mammographic findings.