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Indian J Nucl Med. 2020 Jan-Mar;35(1):82-83. doi: 10.4103/ijnm.IJNM_156_19. Epub 2019 Dec 31.

Unusual Gastric Metastasis in Triple-Negative (Estrogen Receptor/Progesterone Receptor/HER2neu Negative) GATA-Binding Protein 3-Positive Breast Cancer.

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Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India.
Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.
Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.


Triple-negative breast cancer (TNBC) accounts for 20%-25% of breast cancer cases. Around 10%-15% of patients with breast cancer present with upfront metastasis. Lymph node, bone, and liver are common sites of metastasis in hormone-positive breast cancer while brain, lungs, and liver in TNBC. Although visceral metastasis is common in TNBC, metastasis to stomach is unusual. Morphological similarity of primary gastric carcinoma and lobular invasive breast carcinoma often leads to misdiagnosis. Meticulous review of histopathology and immunohistochemistry is essential for diagnosis. We present a case of carcinoma breast with unusual gastric nodular metastasis detected on 18F-fluorodeoxyglucose positron emission tomography-computed tomography.


18F-Fluorodeoxyglucose positron emission tomography–computed tomography; GATA-binding protein 3; gastric metastases; triple-negative breast cancer

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