A Case of FDG-Avid but FAPI-Negative Peritoneal Metastatic Gastrointestinal Stromal Tumor.
case_report · Level V
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- Record sourced from PubMed, PMID 42710079.
- Also identified by DOI 10.1097/RLU.0000000000006653.
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Abstract
An 80-year-old man underwent 18F-FDG PET/CT and 68Ga-FAPI PET/CT for a biopsy-confirmed metastatic gastrointestinal stromal tumor (GIST). While 18F-FDG PET/CT revealed intensely increased uptake in the perisplenic, right abdominal, and pelvic peritoneal implants, 68Ga-FAPI PET/CT unexpectedly showed negligible tracer uptake across all corresponding lesions.
Medical subject headings
- Fluorodeoxyglucose F18
- Gastrointestinal Stromal Tumors
- Positron Emission Tomography Computed Tomography
- Peritoneal Neoplasms