
Premium content
Access to this content requires a subscription. You must be a premium user to view this content.

poster
Uncommon Pathways: A Rare Case of Breast Metastasis from Diffuse Gastric Cancer with Sporadic CDH1 Mutation
While Gastric cancer is the second leading cause of cancer-related mortality worldwide, its metastatic spread to the breast is extremely rare. This article illustrates a patient with primary diffuse-type gastric cancer which metastasized to the breast.
A 52-year-old post-menopausal woman presented to the hospital with severe abdominal pain and constipation. Imaging showed lymphadenopathy gastric wall thickening, and a pulmonary nodule. Biopsy revealed diffuse type, poorly differentiated adenocarcinoma. A CT-PET showed hypermetabolic nodularity suspicious for primary breast malignancy versus metastatic disease. This was subsequently proven to be metastatic via immunochemistry staining. This case represents one of very few documented cases of gastric adenocarcinoma metastasizing to the breast and emphasizes the key role of immunohistochemistry in the diagnostic process.