Autopsy and Case Reports
https://www.autopsyandcasereports.org/article/doi/10.4322/acr.2024.484
Autopsy and Case Reports
Clinical Case Report

Neuroendocrine breast carcinoma

Laura Pratas Guerra; Joana Simões; Diogo Carvalho Sá; José Polónia; António Araújo

http://dx.doi.org/10.4322/acr.2024.484 Autops Case Rep, vol.14, e2024484, 2024
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Abstract

Neuroendocrine breast cancer (NEBC) is a rare and heterogeneous entity. It most commonly presents a luminal phenotype and a worse prognosis. When diagnosed in an advanced stage, metastasis from another neuroendocrine tumor should be excluded.This case features a premenopausal woman with an oligometastatic breast large cell neuroendocrine carcinoma, estrogen receptor (ER) positive, and human epidermal growth factor receptor 2 (HER2) negative. Since the patient was very symptomatic at the presentation of the disease, chemotherapy was started. Complete radiological response of the metastatic disease was achieved, and the patient was then submitted to radical breast surgery and bilateral oophorectomy. She subsequently underwent radiation therapy. Since then and to date, she has been under endocrine therapy (ET) and a CDK4/6 inhibitor (CDK4/6i), with no evidence of malignant disease. Evidence to guide the choice of treatment for these tumors is currently scarce. In cases with oligometastatic disease, radical treatment should be considered. Given that this entity is rare, its reporting should be encouraged.

Keywords

Carcinoma, Neuroendocrine, Breast Cancer, Pathology

References

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Submitted date:
12/18/2023

Accepted date:
02/29/2024

Publication date:
03/21/2024

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