title: Ultrasound Image Classification of Ductal Carcinoma In Situ (DCIS) of the Breast: Analysis of 705 DCIS Lesions.
abstract: The Japan Association of Breast and Thyroid Sonology (JABTS) proposed, in 2003, a conceptual classification system for non-mass abnormalities to be applied in addition to the conventional concept of masses, to facilitate detecting ductal carcinoma in situ (DCIS) lesions. The aim of this study was to confirm the utility of this system and to clarify the distribution of these findings in DCIS lesions. Data on 705 surgically treated DCIS lesions from 16 institutions in Japan were retrospectively reviewed. All 705 DCIS lesions could be classified according to the JABTS classification system. The most frequent findings were hypo-echoic areas in the mammary gland (48.6%), followed by solid masses (28.0%) and duct abnormalities (10.2%) or mixed masses (8.1%). Distortion (1.3%), clustered microcysts (1.4%) and echogenic foci without a hypo-echoic area (2.5%) were uncommon. These results suggest that the concept of non-mass abnormalities is useful in detecting DCIS lesions.
authors.affiliation: Department of Breast Surgery, National Hospital Organization Sendai Medical Center, Sendai, Miyagi, Japan. Electronic address: Tak@snh.go.jp.
authors.forename: Takanori
authors.initials: T
authors.lastname: Watanabe
authors.affiliation: Clinical Research Data Center, Tohoku University Hospital, Sendai, Miyagi, Japan.
authors.forename: Takuhiro
authors.initials: T
authors.lastname: Yamaguchi
authors.affiliation: Department of Radiology Diagnostic Breast Imaging, St Luke's International Hospital, Chuo-ku, Tokyo, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Tsunoda
authors.affiliation: Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
authors.forename: Setsuko
authors.initials: S
authors.lastname: Kaoku
authors.affiliation: Tsukuba International Breast Clinic, Tsukuba, Ibaraki, Japan.
authors.forename: Eriko
authors.initials: E
authors.lastname: Tohno
authors.affiliation: Department of Breast Surgery, National Center for Global Health and Medicine, Shinjuku-Ku, Tokyo, Japan.
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Yasuda
authors.affiliation: Department of Cancer Detection and Diagnosis, Tokyo Health Service Association, Shinjuku-ku, Tokyo, Japan.
authors.forename: Kanako
authors.initials: K
authors.lastname: Ban
authors.affiliation: Department of Breast Surgery, Hyogo Cancer Center, Akashi, Hyogo, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Hirokaga
authors.affiliation: Breast Surgery, Shonan Kamakura General Hospital, Kamakura-shi, Kanagawa, Japan.
authors.forename: Kumiko
authors.initials: K
authors.lastname: Tanaka
authors.affiliation: Tsukuba International Breast Clinic, Tsukuba, Ibaraki, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Umemoto
authors.affiliation: Breast Surgery, Nishi-kobe Medical Center, Nishi-ku, Kobe City, Japan.
authors.forename: Toshitaka
authors.initials: T
authors.lastname: Okuno
authors.affiliation: Breast Center, Suita Tokushukai Hospital, Suita-city Osaka, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Fujimoto
authors.affiliation: Department of Breast Surgery, Minami Osaka General Hospital, Higashi-Kagaya Suminoe-ku, Osaka City, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Nakatani
authors.affiliation: Department of Surgery I, Dokkyo Medical University, Mibu-Machi, Tochigi, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Ito
authors.affiliation: Tsukuba International Breast Clinic, Tsukuba, Ibaraki, Japan.
authors.forename: Ei
authors.initials: E
authors.lastname: Ueno
mesh_terms: D001940:Breast / Q000000981:diagnostic imaging; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies; D016217:Ultrasonography, Mammary / Q000379:methods*
keywords: Breast cancer; Diagnosis; Ductal carcinoma in situ; Multicenter study; Ultrasound