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Case Reports
. 2020 Jun 15;7(6):e00411.
doi: 10.14309/crj.0000000000000411. eCollection 2020 Jun.

Breast Cancer Metastasis Presenting as Colonic Polyps

Jamie Bering  1 , Margaret Ryan  2 , Suryakanth R Gurudu  1
Affiliations
Case Reports

Breast Cancer Metastasis Presenting as Colonic Polyps

Jamie Bering et al. ACG Case Rep J. .

Abstract

Breast cancer is the most common malignancy among women and is the second leading cause of cancer-related death among women in the United States. Rarely, breast cancer can metastasize to the gastrointestinal tract. We present a case of metastatic breast cancer diagnosed after finding metastatic lesions appearing as polyps during a colonoscopy.

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Figures

Figure 1.
Figure 1.
Colonoscopy showing (A) a 2-mm cecal polyp and (B) a 2-mm transverse colon polyp.
Figure 2.
Figure 2.
Immunohistochemical staining of the tumor showing (A) atypical tumor cells with signet ring features and invasion of the lamina propria (hematoxylin and eosin stain, 20× magnification), (B) atypical tumor cells with signet ring features (hematoxylin and eosin stain, 40× magnification), and (C) strong diffuse positive GATA3 representing metastasis from primary breast carcinoma.
See this image and copyright information in PMC

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