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Current Oncology is published by MDPI from Volume 28 Issue 1 (2021). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on as a courtesy and upon agreement with Multimed Inc..
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Case Report

Metastatic Carcinoid Presenting as a Breast Lesion

Department of Oncology, Mayo Clinic-Arizona, 13400 E Shea Boulevard, Scottsdale, AZ 85254, USA
Department of General Surgery, Medcenter One-North Dakota, Bismarck, ND, USA
Author to whom correspondence should be addressed.
Curr. Oncol. 2010, 17(6), 73-77;
Submission received: 10 August 2010 / Revised: 7 September 2010 / Accepted: 12 October 2010 / Published: 1 November 2010


Metastasis to the breast is a rare occurrence, constituting fewer than 2% of all breast tumours. Of all metastatic tumours in the breast, most arise from contralateral breast primaries. Other reported primary solid tumour sites include melanoma; lung, gastric, and renal cancers; and approximately 29 cases of carcinoid tumour. Ambiguous presentations and an absence of carcinoid syndrome features make accurate radiographic and histologic assessment of breast carcinoids challenging. Here, we report the case of a 52-year-old woman who presented with a mammographic abnormality in the left breast. Excisional biopsy revealed histopathology consistent with carcinoid. After an exhaustive work-up, carcinoid within the terminal ileum was ultimately identified, and the woman was diagnosed with metastatic breast carcinoid, an exceedingly rare entity. This paper describes the common mammographic, cytologic, and immunohistochemical features typical of metastatic breast carcinoid tumours, together with their common clinical features, prognosis, and treatment options.
Keywords: breast cancer; carcinoid; metastasis; neuroendocrine breast cancer; carcinoid; metastasis; neuroendocrine

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MDPI and ACS Style

Geyer, H.L.; Viney, J.; Karlin, N. Metastatic Carcinoid Presenting as a Breast Lesion. Curr. Oncol. 2010, 17, 73-77.

AMA Style

Geyer HL, Viney J, Karlin N. Metastatic Carcinoid Presenting as a Breast Lesion. Current Oncology. 2010; 17(6):73-77.

Chicago/Turabian Style

Geyer, Holly L., J. Viney, and N. Karlin. 2010. "Metastatic Carcinoid Presenting as a Breast Lesion" Current Oncology 17, no. 6: 73-77.

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