Comparison of Sensitivity of Screening Mammography with that of Screening Ultrasonography for Detection of Noninvasive Ductal Breast Cancer at Our Institution

DOI 1 Citations 12 References
  • Okazaki Hiroko
    Department of Radiology, St. Marianna University School of Medicine
  • Tsujimoto Fumio
    Clinical Laboratory Department, St. Marianna University School of Medicine
  • Ohta Tomoyuki
    Department of Radiology, St. Marianna University School of Medicine
  • Okamoto Kyoko
    Department of Radiology, St. Marianna University School of Medicine
  • Kanemaki Yoshihide
    Department of Radiology, St. Marianna University School of Medicine
  • Nakajima Yasuo
    Department of Radiology, St. Marianna University School of Medicine
  • Iwatani Atsuo
    Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine
  • Ogata Haruki
    Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine
  • Ohta Tomohiko
    Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine
  • Fukuda Mamoru
    Department of Breast and Endocrine Surgery, St. Marianna University School of Medicine
  • Maeda Ichiro
    Department of Pathology, St. Marianna University School of Medicine

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  • 当院の非浸潤性乳管癌（ＤＣＩＳ）におけるマンモグラフィ（ＭＭＧ）および超音波（ＵＳ）の仮想検診感度の比較

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Abstract

From January 2005 to October 2007, 53 women were diagnosed as ductal carcinoma in situ (DCIS) from our program. We examined the sensitivity of mammography (MMG) and ultrasonography (US) using individual initial report written independently on the same day. Category 3 or higher judgement was considered as a true positive.<br>The sensitivities of MMG and US were 71.7% (38/53) and 81.1% (43/53), respectively, and the difference was not statistically significant. When the results were analyzed in terms of patient age, women who were 49 or younger had a MMG sensitivity of 75.0% (21/28) and a US sensitivity of 82.1% (23/28), whereas women who were 50 or older had a MMG sensitivity of 68.0% (17/25) and a US sensitivity of 80% (20/25), none of these differences being statistically significant. Thus US was proved to have a DCIS detection rate similar to that of MMG.<br>Among the 53 patients with proven DCIS, 29 (54.7%) presented positive findings on both MMG and US, 9 (17.0%) only on MMG, and 14 (26.4%) only on US. Five of the 14 US-positive patients showed punctate high echoes, suggesting the usefulness of US for detection of calcification. In 52 (98%) of the patients, either MMG, US, or both gave positive results for detection of DCIS. Therefore we conclude that MMG and US compensate each other for breast cancer screening.

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