Incidental Detection of Meningioma on 18 F-Flutemetamol PET.

An, Young-Sil; Moon, So Young; Roh, Tae Hoon · Clin Nucl Med · 2025

case_report · Level V

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Abstract

Meningioma is typically a benign tumor that may incidentally be found on imaging. This case demonstrates the utility of 18 F-flutemetamol (FMM) PET/CT in an 80-year-old woman evaluated for memory decline. Although the scan was performed for dementia assessment, it revealed an incidental mass in the frontal region. Early-phase PET showed relatively low uptake, while delayed-phase imaging displayed intense uptake of 18 F-FMM. Magnetic resonance imaging and surgical pathology confirmed the lesion as a meningioma. This report may aid in interpreting incidental mass lesions on 18 F-FMM PET, providing a reference for physicians who may encounter similar findings.

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