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Updated: Feb 3, 2026

Non-invasive Imaging and Analysis of Cerebral Ischemia in Living Rats Using Positron Emission Tomography with 18F-FDG
Published on: December 28, 2014
False Positive 18F-FDG Positron Emission Tomography Findings in Schwannoma-A Caution for Reporting Physicians
Paul Boré1, Renaud Descourt1, Luc Ollivier2
1Service d'Oncologie Médicale, Centre Hospitalier Régional et Universitaire de Brest, Université de Bretagne Occidentale, Brest, France.
Abstract:
Schwannoma is a rare source of false-positive 18F-fluorodeoxyglucose (18F-FDG) uptake in Positron-emission tomography (PET/CT), inducing potential errors in staging of several solid cancer, with implications for patient management. This clinical case reports the situation of a patient undergoing an 18F-FDG-PET/CT for initial staging of an ovarian adenocarcinoma. We found a high paramediastinal hypermetabolic mass suspicious of remote extension or secondary synchronous primitive tumor. The biopsy finally reveals a histopathology of Schwannoma, allowing the patient to be eligible for a surgical procedure of her ovarian adenocarcinoma by rejecting the hypothesis of malignancy.
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