Increased 68Ga-FAPI Uptake of Ureteric Fibroepithelial Polyp and Costal Cyst Mimicking Malignancy With Bone Metastasis

作者：Xiang Lin, Lu Zhang, Guojian Zhang · 发表于：Clinical Nuclear Medicine · 年份：2025 · DOI：10.1097/rlu.0000000000006097 · 被引用次数：1 · 研究领域：Peptidase Inhibition and Analysis、Protease and Inhibitor Mechanisms、Cardiac Structural Anomalies and Repair

A 70-year-old man presented with progressive dysuria. 18 F-FDG PET/CT showed no abnormal metabolic activity. 68 Ga-FAPI PET/CT revealed intense 68 Ga-FAPI in the lower left ureter and the left rib, mimicking malignancy with bone metastasis. However, postoperative pathological biopsy demonstrated the diagnosis of ureteric fibroepithelial polyp. In addition, the prior CT scan confirmed a bone cyst. Our case highlights the necessity of reviewing the patient's skeletal history when encountering a primary tumor with FAPI uptake and a concurrent FAPI-avid bone lesion.