Nihon Nyugan Kenshin Gakkaishi (Journal of Japan Association of Breast Cancer Screening)
Online ISSN : 1882-6873
Print ISSN : 0918-0729
Volume 24 , Issue 2
Showing 1-27 articles out of 27 articles from the selected issue
The 24th Congress of Japan Association of Breast Cancer Screening at Maebashi/Workshop 1
Bilogical Characteristics of Breast Cancer Detected by Screening
The 24th Congress of Japan Association of Breast Cancer Screening at Maebashi/Workshop 2
Study of Breast Cancer Screening for High-risk Women
The 24th Congress of Japan Association of Breast Cancer Screening at Maebashi/Debate
Biological Characteristics of Breast Cancer Detected by Screening and Interval Breast Cancer
Original Articles
  • Rie Mukai, Noriko Tsukamoto, Tomoko Wada, Sakiko Suzuki, Shinobu Akiya ...
    2015 Volume 24 Issue 2 Pages 285-292
    Published: 2015
    Released: June 14, 2018
    The subtype of breast cancer is an important factor affecting subsequent mortality. Non―luminal breast cancer has been considered to have high―grade malignancy. The purpose of this study was to clarify the subtype of breast cancer detected by ultrasound(US)and mammography(MG)screening. Screening using US and MG was performed for 28,691 and 40,282 women, respectively, between January 2009 and December 2011 at our preventive medicine center. Cancers were detected in 112(0.39%, 124 lesions)and 97(0.24%, 101 lesions)women by US and MG, respectively. We investigated the subtypes of 74 US―detected invasive cancers and 59 MG―detected invasive cancers, and the following results were obtained: US: Luminal A(LA)25 (33.8%), Luminal B(LB)38(51.4%), LA/B6(8.1%), HER22(2.7%), and triple negative (TN)3(4.1%). MG: LA13(22.0%), LB32(54.2%), LA/B3(5.1%), HER26(10.2%), TN4(6.8%), and HER2/TN1(1.7%). In our series luminal cancers were detected more often overall by US than by MG(p<0.001). Thirty―seven cancers were detected among 11938 subjects, who underwent both MG and US. Only three non―luminal cancers were detected; all of them were detected by MG and none was detected by US alone. Although US is effective for detecting MG―negative breast cancer in dense breasts, our results suggest that additional US is of limited utility for detecting non―luminal cancer with a high grade of malignancy.
    Download PDF (1080K)
  • Mikinao Oiwa, Endo Tokiko, Takako Morita, Namiko Suda, Yasuyuki Sato, ...
    2015 Volume 24 Issue 2 Pages 293-303
    Published: 2015
    Released: June 14, 2018
    Focal asymmetric densities(FADs)are classed as category 1 when ultrasonography allows an observer to conclude they fall within the range of normal variation according to the criteria for combined screening with mammography and ultrasonography. However, the detectability of FAD by ultrasonography has not been studied systematically. In this study, we considered the combined criteria that would increase the specificity of breast cancer screening using mammography and ultrasonography for FADs that necessitated recall after mammography screening. We analyzed 141 breasts with FAD, identified from a database of mammographic reports for 445 patients who had been recalled after mammography screening in 2011. Among these cases we reconfirmed 94 showing FAD. Ultrasonography was able to detect 68% of these FAD cases, and 31% were considered to represent normal variation(overlapping or isolated mammary gland). Ultrasonography was unable to detect 32% of cases in which breast cancers had not been diagnosed. Eight breast cancers were diagnosed among our FAD cases; six were invasive and the median size of the mammographic FAD was 23(17―43)mm, whereas the sizes of the tumors determined on the basis of ultrasonography and pathology were22(14―35)and31(12―56)mm, respectively. One was categorized as category 3 and the others as category 4―5 on ultrasonography. Ultrasonographic detection of breast cancers from FADs recalled after mammography screening may be relatively easy when the cancers are large or invasive. FADs may also be classed as category1 by synchronous combined screening when the corresponding lesion cannot be detected by ultrasonography. Further research is needed to find better ways of detecting elusive breast cancers with some kind of background mammary gland on ultrasonography.
    Download PDF (642K)
  • Aika Kawasaki, Kanako Tanaka, Kenichi Inoue, Kyoko Goda, Takeshi Sasak ...
    2015 Volume 24 Issue 2 Pages 304-310
    Published: 2015
    Released: June 14, 2018
    Stereotactic vacuum―assisted biopsy(Mammotome, ST―MMT)provides accurate diagnosis of breast cancer. Here we discuss the accuracy of the initial results we have obtained with the ST―MMT procedure in comparison with either re―biopsy or surgical resection. A total of264ST―MMT procedures conducted from February 2009 through April 2013were reviewed retrospectively. Among the cases examined, 172 were diagnosed as benign. During follow―up, six cases showed the change in the distribution of microcalcification, and re―biopsy was performed using ST―MMT. Although two of them were atypical papillary lesion or atypical ductal hyperplasia, none of the cases were diagnosed as breast cancer. In 22 cases, atypical epithelium was found, and more careful follow―up was requested. Two years after initial biopsy, ductal carcinoma in situ was detected in one case. Seventy patients diagnosed as having malignant lesions underwent surgery at our hospital, and in 87% of them the ST―MMT result was found to be concordant with the final histology obtained at surgery. Nine cases that were diagnosed as ductal carcinoma in situ from the ST― MMT specimen were finally diagnosed as invasive carcinoma after surgery. ST―MMT is diagnostically reliable for microcalcifications in the breast. Although the procedure may be invasive, it is advantageous to patients in terms of safety and accuracy.
    Download PDF (718K)
  • Kanako Tanaka, Aika Kawasaki, Kenichi Inoue, Kyoko Goda, Takako Doi
    2015 Volume 24 Issue 2 Pages 311-317
    Published: 2015
    Released: June 14, 2018
    Radiological technicians play an important role in operating the stereotactic vacuum―assisted Mammotome(STMMT)for detection of calcified breast lesions. At our institution, radiological technicians have been required to write technical reports to share information about the process and the results of clinical examination. Five clinicians explain the necessity of STMMT to the patients, and two other clinicians actually operate the STMMT with the assistance of the technicians. The technicians’ reports include details of how the biopsy had been carried out and whether calcification was adequately detected. A total of479patients underwent STMMT between February 2009 and September 2013, and the reports were reviewed and evaluated for their usefulness. All 7 clinicians recognized the usefulness of these reports for gaining information about the correspondence between radiological findings and pathological reports, and for management of patient unease and dissatisfaction with regard to STMMT. The technicians’ reports were also useful for determining the size of the specimen to be surgically excised. In this way, the technical reports were proved to be useful for clinical diagnosis and surgical treatment. As radiological technicians are responsible for operating the STMMT, their technical reports are helpful for confirming the reliability of the procedure and for promoting the quality of medical care.
    Download PDF (867K)