Background the high incidence of ductal carcinoma in situ (DCIS) and variations in its treatment motivate inquiry into the comparative effectiveness of treatment options.

导管原位癌(DCIS)的高发病率和治疗多样化促使人们探究各种治疗的比较效应。

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There was also significant difference between ductal carcinoma in situ (or with early infiltration) and invasive ductal carcinoma (P<0.05), and the former was weaker.

导管内癌（或伴早浸）与浸润性导管癌相比，表达水平低，差异有显著性意义（P<0.05）。

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Methods The breast sonograms in 20 cases with ductal carcinoma in situ were analysed and compared with pathology.

方法对20例经病理确诊患者的声像图资料，结合病理进行综合分析。

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Navratilova said she has a noninvasive form of the cancer, called ductal carcinoma in situ, that was detected during a mammogram.

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Even in the precancerous stage, called ductal carcinoma in situ (DCIS) when abnormal cells are confined to a milk duct, physicians almost always advise women to have a lumpectomy or mastectomy along with radiation, because about 20% of the 65, 000 cases of DCIS found every year in the U.S. become invasive cancer.

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