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Cutaneous and breast metastasis from colorectal adenocarcinoma: A rare case report
Xiu-Yong Liao1,2, Chao-Yuan Liu3, Li-Bing Liang4
1Department of Oncology, Chongqing Qiangjiang Central Hospital, Chongqing 409000, P.R. China.
Abstract:
Synchronous breast and cutaneous metastases from colorectal adenocarcinoma as the initial clinical manifestation, without visceral metastases, are extremely rare. We herein report the case of a 68-year-old female patient who presented with pruritic skin lesions and a breast lump 6 years after abdominoperineal resection of colorectal adenocarcinoma. Such cases can be easily misdiagnosed as cutaneous metastasis from breast cancer. However, the management of colorectal metastases differs from that of primary breast cancer, and mastectomy may be unnecessary. Timely and accurate diagnosis requires a high level of suspicion, thorough medical clinical history and biopsy followed by immunohistological examination. Specific immunohistochemical markers, such as cytokeratin (CK)7, CK20 and CDX2, may help differentiate between primary breast and metastatic colorectal adenocarcinoma.
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