Mesenteric Panniculitis Mimicking Metastases From Melanoma on FDG PET/CT in a Pediatric Patient Receiving Immunotherapy.
case_report · Level V
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- Record sourced from PubMed, PMID 41365510.
- Also identified by DOI 10.1097/RLU.0000000000006096.
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Abstract
Inflammatory immune-related adverse events are known complications of immunotherapy, particularly checkpoint inhibitors. A 16-year-old girl with metastatic melanoma, treated with nivolumab, dabrafenib, and trametinib, presented with abdominal pain and vomiting. Initial CT suggested metastases, showing mesenteric stranding and targetoid lesions. FDG PET/CT confirmed increased FDG uptake in the same region, but subsequent MRI and follow-up findings pointed to mesenteric panniculitis.
Medical subject headings
- Positron Emission Tomography Computed Tomography
- Fluorodeoxyglucose F18
- Melanoma
- Immunotherapy
- Panniculitis, Peritoneal