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CC BY-NC-ND 4.0 · World J Nucl Med 2019; 18(02): 187-188
DOI: 10.4103/wjnm.wjnm_26_18
Case Report

First case of 18F-choline uptake in acoustic schwannoma after stereotactic radiotherapy

Demetrio Arico
1   Department of Nuclear Medicine, Humanitas Oncological Centre of Catania, Catania
,
Claudio Giardina
2   Department of Radiology, ASP of Messina–Hospital of Taormina, (ME)
,
Carmelo Tuscano
3   Department of Radiotherapy, Great Metropolitan Hospital, “Bianchi Melacrino-Morelli”, Reggio Calabria, Italy
,
Antonio Picone
4   Department of Oncology, Humanitas Oncological Centre of Catania, Catania
,
Vincenzo Militano
5   Department of Nuclear Medicine, University College of London Hospital, London, United Kingdom
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Abstract

A 69-year-old male patient, with bilateral hypoacusia and tinnitus, had a diagnosis of left vestibular schwannoma with synchronous meningioma on the left frontal lobe. After partial surgical resection of the acoustic schwannoma, this was followed by stereotactic radiosurgery on the residual lesion. The patient had a metachronous prostate cancer treated with conformal radiotherapy associated to 6 months of hormone therapy with luteinizing hormone/releasing hormone analog. During follow-up, prostate-specific antigen value increased to 0.27 ng/mL and the patient underwent 18F-methylcholine positron emission tomography/computed tomography (18F-choline PET/CT). The whole-body scan demonstrated a focus of increased uptake at level of the left cerebellopontine angle and at the left frontal lobe, corresponding to the known vestibular schwannoma and meningioma. A subsequent brain contrast-enhanced magnetic resonance imaging (MRI) showed an increased dimension of the left cerebellopontine neuroma and dimensional stability of the left frontal meningioma compared with previous MRI of 6 months earlier. To the best of our knowledge, we describe the first case of a 18F-choline PET/CT demonstrating a relapse of a vestibular schwannoma after stereotactic radiotherapy.

Keywords

18F-Choline - positron emission tomography/computed tomography - schwannoma

Financial support and sponsorship

Nil.




Publication History

Received: 00 00 2019

Accepted: 00 00 2019

Article published online:
22 April 2022

© 2019. Sociedade Brasileira de Neurocirurgia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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