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Journal of Medical Ultrasonics

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1988 - Vol.15

Vol.15 No.05

Original Article(原著)

(0420 - 0427)


Assessment on Differential Diagnosis between Tumor-forming Mastopathy on Ultrasonography and T1 Breast Cancer

小西 豊1, 小縣 正明1, 黒木 輝夫1, 栃尾 人司2, 藤本 敏明1, 森本 義人1, 相川 貴子1, 尾上 一美1, 大谷 雅美1, 宇井 一世1

Yutaka KONISHI1, Masaaki OGATA1, Teruo KUROKI1, Hitoshi TOCHIO2, Toshiaki FUJIMOTO1, Yoshito MORIMOTO1, Takako AIKAWA1, Kazumi ONOE1, Masami OTANI1, Kazuyo Ui1

1神戸市立中央市民病院外科, 2神戸市立中央市民病院超音波検査室

1Department of Surgery, Kobe Municipal Central Hospital, 2Ultrasonic Laboratory, Kobe Municipal Central Hospital

キーワード : T1 breast cancer, Mastopathy, Ultrasonography

One of the reasons for unsatisfactory accuracy rate of the ultrasonography of the tumors sized less than 20 mm in diameter is the difficulty in differentiating the tumor-forming mastopathy from T1 breast cancer. We paid a special attension to the ultrasonic feature of the anterior borderline of the mammary gland to resolve this problem for the differentiation.
The anterior borderline was demonstrated to be smooth in mastopay, whereas in cancer it was interrupted or rough in 55 out of 58 lesions. This can be coincident to histological findings; in mastopathy the lesion always located within the mammary gland, on the other hand in 55 out of 58 cancer lesions infiltrated through fatty tissue.
Our result of this series was that the sensitivity was 94.8% (55/58) and the specificity was 96.6% (86/89) respectively.
In conclusion, ultrasonic feature of the anterior borderline of the mammary gland is very useful in the differential diagnosis between the tumor-forming mastopathy and T1 breast cancer.