一名 70 岁男性被诊断患有前列腺癌，被转诊至核医学科，利用前列腺特异性膜抗原 (PSMA) PET/CT 进行肿瘤分期。在没有富含 PSMA 的淋巴结或远处转移的前列腺中观察到高 PSMA 摄取。巧合的是，在右甲状腺叶背侧观察到了一个富含 PSMA 的结节。互补 4 维 CT 显示一个 18 毫米的圆形结节，快速对比增强，与其周围环境界限清楚。血液检查显示血清钙和甲状旁腺激素升高，与原发性甲状旁腺功能亢进症一致。随后，进行了甲状旁腺切除术，结节的组织病理学检查证实为甲状旁腺腺瘤。版权所有 © 2023 Wolters Kluwer Health, Inc. 保留所有权利。

A 70-year-old man, diagnosed with prostate cancer, was referred to the Department of Nuclear Medicine for tumor staging with prostate-specific membrane antigen (PSMA) PET/CT. High PSMA uptake was observed in the prostate without PSMA-avid lymph nodes or distant metastases. Coincidentally, a PSMA-avid nodule was observed dorsal to the right thyroid lobe. A complementary 4-dimensional CT showed a round nodule of 18 mm with quick contrast enhancement well demarcated from its surroundings. Blood tests revealed elevated serum calcium and parathyroid hormone consistent with primary hyperparathyroidism. Subsequently, parathyroidectomy was performed, and histopathological examination of the nodule confirmed a parathyroid adenoma.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.