Neuroendocrine Tumor Metastases to the Breast: A Case Report and Review of the Literature.

Cureus

Gastrointestinal and Neuroendocrine Tumors, Centro de Tratamiento e Investigación Sobre Cáncer Luis Carlos Sarmiento Angulo (CTIC), Bogotá, COL.

Published: June 2023

Breast metastases from neuroendocrine neoplasms (NENs) are considered infrequent. We report a case of a patient with ileocecal neuroendocrine tumor (NET) metastases to both breasts, for whom the initial clinical presentation was chronic diarrhea. Breast metastasis was initially suspected by a 68-Gallium DOTANOC positron emission tomography (PET)/CT and was confirmed by histopathology. We also performed a literature review in which we identified 116 cases of NENs metastatic to the breast reported so far. Most cases occurred in older women, were caused by NETs, and had the gastrointestinal tract as the primary site.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10359153PMC
http://dx.doi.org/10.7759/cureus.40703DOI Listing

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