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Medical Science Monitor Basic Research


Breast Cancer Metastasis Masquerading as Primary Colon and Gastric Cancer: A Case Report

Unusual clinical course, Mistake in diagnosis, Management of emergency care

Arish Noor, Nerea Lopetegui-Lia, Aakash Desai, Thalia Mesologites, Joerg Rathmann

USA Department of Internal Medicine, University of Connecticut, Farmington, CT, USA

Am J Case Rep 2020; 21:e917376

DOI: 10.12659/AJCR.917376

Available online: 2020-01-01

Published: 2020-01-01


BACKGROUND: Breast cancer is the most common malignancy in women worldwide. Despite treatment, recurrence and metastasis are common. Lobular breast cancer most commonly metastasizes to the lungs, liver, lymph nodes, and sites in the brain. Metastasis to the gastrointestinal tract is rare, with few cases reported to date.
CASE REPORT: This report describes a patient with late colon and gastric metastases from lobular breast cancer mimicking primary colon and gastric cancers.
CONCLUSIONS: Immunohistochemical methods can help differentiate metastatic breast disease to the gastrointestinal tract from primary gastrointestinal malignancy.

Keywords: Colonic Neoplasms, Neoplasm Metastasis, Stomach Neoplasms