一名35岁的女性在怀孕期间被诊断出乳腺癌。分娩后11天，患者接受FDG PET / CT进行全身分期。在两侧乳房中都可以看到广泛的亲和性，右侧乳房活检夹处显示出更为亲和性。没有淋巴结或远处的转移。患者正在积极的母乳喂养，这解释了乳房的广泛亲和性。这种情况展示了同时存在恶性和良性FDG亲和性的乳房，并在双侧乳腺组织中鉴别出具有局限性FDG亲和性的右侧乳腺恶性病变，其中乳房喂养导致生理性FDG亲和性升高。 版权所有©2023 Wolters Kluwer Health，Inc.。 保留所有权利。

A 35-year-old woman presented with breast cancer diagnosed during pregnancy. Eleven days after delivery, the patient underwent FDG PET/CT for systemic staging. Avidity was seen diffusely in both breasts, with a more avid focus at the site of a biopsy clip in the right breast. There were no lymph nodes or distant metastases. The patient was actively breast feeding, explaining the diffuse breast avidity. This case demonstrates both malignant and benign FDG avidity in the breasts at the same time, with a focal FDG-avid right breast malignancy identified among bilateral breast parenchyma with elevated physiologic FDG-avid secondary to breast feeding.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.