Usefullness of real-time whole breast scanning in mass screening for young women.
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概要
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Our system of screening for breast cancer ensures that all the women involved are examined by real-time whole breast scanning (WBS). During a period of 7 years between 1990 and 1997, a total of 19, 592 women visited Kagawa Prefectural Cancer Detection Center. Included in this amount were 9, 264 initial screenings. They were examined by WBS, as part of a mass screening for citizens of Takamatsu. We studied results of this screening by comparing the age groups of women in their thirties, forties, fifties and sixties or older. The composition of age of the 19, 592 women were as follows : 28% were 30-39 years, 33% were 40-49 years, 22 % were of 50-59 years and 17% were 60 years or older. The average age was 47 years. Young women whose ages were less than fifty formed more than 60 per cent.<BR>Forty-two breast cancers were detected, among which 15 cases were non-palpable and 17 cancers were less than 20 mm in size and 10 cancers were more than 21 mm. A detection of non -palpable cancer contributed to a high overall detection rate. Breast cancer detection rates of initial screening were 0.08% in thirties, 0.39% in forties, 0.25% in fifties and 0.71% in sixties or older. This can be compared with the overall rates which were 0.08% in thirties, 0.22% in forties, 0.22% in fifties and 0.37% in sixties or older. The detection rates of those women in their forties were higher than those in their fifties.<BR>Among the women whose ages were 49 years or under non-palpable cancers detected were six. We detected abnormality in all 6 cases easily by WBS but 4 lesions out of 6 cancers showed no abnormality on mammography, which histological finding were 3 invasive carcinomas and one noninvasive ductal carcinoma. The 2 lesions which showed abnormality on mammography were one noninvasive ductal carcinoma and one minimal invasive ductal cancer, which malignancy were lower than 4 lesions which were not detected by mammography.<BR>Real-time whole breast scanning is useful because of (1) high detection rate, (2) detection of high malignant cancer, (3) low cost and quicker examinations. Especially for young Japanese women whose breasts are thinner and denser than European and American women's, WBS is more useful than mammography. We consider that mass screening with WBS in Japan has great potential.
- 日本乳癌検診学会の論文
日本乳癌検診学会 | 論文
- Characteristics of Patients with Interval Breast Carcinomas.
- Evaluation of Mass Screening for Breast Cancer Conducted under the Health and Medical Service Law for the Elderly and the Actual Conditions of Health Insurance Administration in Zentsuji City.
- Two Cases of Mucinous Carcinoma of the Breast Manifested as Interval Cancer.
- Breast-Conserving Therapy for Breast Cancer Patients Showing Mammographic Evidence of Calcification.
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