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01.12.2019 | Case report | Ausgabe 1/2019 Open Access

BMC Cancer 1/2019

Multiple metastases of bones and sigmoid colon after mastectomy for ductal carcinoma in situ of the breast: a case report

BMC Cancer > Ausgabe 1/2019
Qiuting You, Yichao Fang, Chenchen Li, Yujie Tan, Jianli Zhao, Cui Tan, Ying Wang, Herui Yao, Fengxi Su
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The prognosis of ductal carcinoma in situ (DCIS) is reportedly well. Extremely rare patients with DCIS develop distant breast cancer metastasis without locoregional or contralateral recurrence. This is the first report of multiple bones and sigmoid colon metastases from DCIS after mastectomy.

Case presentation

A 43-year-old woman was diagnosed with DCIS, and she received mastectomy, followed by endocrine therapy and target therapy. During the following-up, convulsions and pain on the legs were complaint. Therefore, Computed Tomography (CT) on bones and positron emission tomography (PET) for whole body were examined in order. Multiple bones and sigmoid colon were under the suspect of metastases, which were then verified by biopsy in the left ilium and colonoscopy respectively.


This case reveals the heterogeneous behavior and the potential poor outcome of DCIS, regular examination and surveillance are necessary even though the distant metastasis rate in DCIS is low.
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