Interesting Images68Ga-FAPI Outperforms 18F-FDG PET/CT in Identifying Bone Metastasis and Peritoneal Carcinomatosis in a Patient With Metastatic Breast CancerPang, Yizhen MD∗; Zhao, Liang MD†; Chen, Haojun MD, PhD∗Author Information From the ∗Department of Nuclear Medicine and Minnan PET Center †Department of Radiation Oncology, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen, China. Received for publication June 4, 2020; revision accepted July 20, 2020. Conflicts of interest and sources of funding: none declared. Correspondence to: Haojun Chen, MD, PhD, Department of Nuclear Medicine and Minnan PET Center, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, 55 Zhenhai Rd, Xiamen 361003, China. E-mail: [email protected]. Clinical Nuclear Medicine: November 2020 - Volume 45 - Issue 11 - p 913-915 doi: 10.1097/RLU.0000000000003263 Buy Metrics Abstract A 60-year-old woman, previously treated for breast cancer, was referred to gastroenterologists due to persistent abdominal distension. 18F-FDG PET/CT revealed multiple abnormal foci at the skeleton including the bilateral ilium, peritoneum, and omentum. 68Ga-FAPI PET/CT was performed for further detecting the primary lesion, which showed a greater number of bone metastases and higher uptake in peritoneal carcinomatoses than 18F-FDG. Biopsy at the left ilium and omentum indicated metastases from breast cancer. This case highlighted that 68Ga-FAPI may outperforms 18F-FDG PET/CT in identifying bone metastasis and peritoneal carcinomatosis. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.