Incidental Detection of Remote Ictal Hypermetabolism on FDG PET/CT Following Brain Metastatectomy: A Rare Diagnostic Pitfall.
case_report · Level V
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- Record sourced from PubMed, PMID 42545346.
- Also identified by DOI 10.1097/RLU.0000000000006627.
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Abstract
FDG PET/CT is widely used in oncology but may occasionally show non-neoplastic hypermetabolic processes. We report incidental detection of probable ictal/peri-ictal hypermetabolism on follow-up FDG PET/CT in a 39-year-old woman with treated breast carcinoma and prior left temporal metastatectomy. Imaging demonstrated a postoperative cavity in the left temporal lobe and a focal intensely FDG-avid cortical area in the left posterior parietal region without CT correlate or other evidence of active systemic disease. The imaging pattern favored seizure-related cortical hypermetabolism rather than tumor recurrence. Recognition of this uncommon pitfall is important to avoid false-positive interpretation and inappropriate upstaging.
Medical subject headings
- Positron Emission Tomography Computed Tomography
- Fluorodeoxyglucose F18
- Incidental Findings
- Brain Neoplasms