Online Journal
IF値: 1.878(2021年)→1.8(2022年)


Journal of Medical Ultrasonics

にて英文誌のFull textを閲覧することができます.


2018 - Vol.45

Vol.45 No.04

Review Article(総説)

(0355 - 0360)

乳房非腫瘤性病変 -診断のための分類-

Ultrasound image classification of non-mass abnormalities of the breast

渡辺 隆紀



Department of Breast Surgery, Sendai Medical Center

キーワード : non-mass lesion, noninvasive ductal carcinoma, DCIS, breast cancer, non-mass abnormalities


Non-mass abnormalities are of five subtypes, i.e., abnormalities of the ducts, hypoechoic areas in the mammary gland, architectural distortion, multiple small cysts, and echogenic foci without a hypoechoic area. The main lesions recognized as non-mass abnormalities include ductal carcinoma in situ (DCIS), fibrocystic change, and intraductal papilloma. In the case of DCIS with a non-mass abnormality, a hypoechoic area in the mammary gland is the most frequent finding at 76%, followed by abnormalities of the ducts at 16%. Architectural distortion is found in about 2% of DCIS; however, it is an important finding because it is often observed in small invasive carcinoma and invasive lobular carcinoma. In this article, we explain the five classifications and present some cases.