一名73岁的女性因2级胰腺神经内分泌肿瘤接受了68Ga-DOTATOC PET/CT分期检查，结果显示原发性胰腺肿瘤、肝转移、一个左侧胸膜转移和右侧肱三头肌肌肉肿块的高摄取。两年前，她分别接受了18F-FDG PET/CT和111In-pentetreotide扫描，两种放射性示踪剂在三头肌肌肉肿块中的摄取量分别为低和高。组织病理学分析显示为孤立性纤维瘤。免疫组化显示SSTR-2和SSTR-5未染色，提示肿瘤过度表达其他生长抑素受体。这个案例凸显了68Ga-DOTATOC PET/CT的一个潜在问题。Copyright © 2023 Wolters Kluwer Health, Inc.版权所有。

A 73-year-old woman was referred for 68Ga-DOTATOC PET/CT staging of a grade 2 pancreatic neuroendocrine tumor, which showed the primary pancreatic tumor, liver metastases, one left pleural metastasis, and high uptake in a mass of the right triceps brachii muscle. Two years before, she underwent 18F-FDG PET/CT and 111In-pentetreotide scan, respectively, with low and high uptake of each radiotracer in the triceps mass. Histopathological analysis revealed a solitary fibrous tumor. Immunohistochemistry showed no staining for SSTR-2 and SSTR-5, suggesting tumor overexpression of another somatostatin receptor. This case highlighted a potential pitfall on 68Ga-DOTATOC PET/CT.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.