Key result
68Ga-FAPI-04 PET/CT shows avid uptake in intra-abdominal extraskeletal Ewing sarcoma compared to mild 18F-FDG uptake.
Why the study?
Primary extraosseous Ewing sarcoma located in the abdominal cavity and retroperitoneum is rare, prompting the report of its imaging findings.
68Ga-FAPI-04 PET/CT demonstrates avid uptake in intra-abdominal Ewing sarcoma, potentially offering better visualization than 18F-FDG PET/CT.
Answers are grounded in this paper and cite their sources.
Should not change practice after one case; leaves open whether 68Ga-FAPI-04 improves Ewing sarcoma detection.
Primary extraosseous Ewing sarcoma located in the abdominal cavity and retroperitoneum is rare. We report the 18F-FDG PET/CT and 68Ga-FAPI-04 PET/CT imaging findings of intra-abdominal Ewing sarcoma. The mass showed mild FDG uptake and avid FAPI uptake.
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雷庆林 et al. (2026) studied this question. 68Ga-FAPI-04 PET/CT demonstrated avid uptake in intra-abdominal extraskeletal Ewing sarcoma, compared to only mild uptake on 18F-FDG PET/CT.
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