• World Neurosurg · Mar 2020

    Radiological Features of Spontaneous Regression of Vestibular Schwannomas.

    • Vellutini Eduardo de Arnaldo Silva EAS DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil., Teles Gomes Marcos de Queiroz MQ DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil., Roger Schmidt Brock, Oliveira Matheus Fernandes de MF DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil. Electronic addr, Raquel Salomone, Godoy Luis Filipe de Souza LFS Hospital Sírio Libanês, São Paulo, Brazil., and Leonardo Gilmone Ruschel.
    • DFV Neuro, São Paulo, Brazil; Hospital Sírio Libanês, São Paulo, Brazil; Hospital Alemão Oswaldo Cruz, São Paulo, Brazil.
    • World Neurosurg. 2020 Mar 1; 135: e488-e493.

    BackgroundVestibular schwannoma (VS) is the most common benign tumor originating in the cerebellopontine angle. In most cases, tumors tend to grow and deserve proper treatment. Sometimes they stabilize, and rarely they decrease in size spontaneously.MethodsWe evaluated retrospectively the images of patients with spontaneous tumor regression. We describe the common neuroimage findings of patients with spontaneous tumoral regression.ResultsFour patients with diagnosis of VS were followed with magnetic resonance imaging (MRI). There were some relevant features in MRI: a heterogeneous contrast enhancement in the outer layer of the tumor and presence of a cerebrospinal fluid column between the tumor and the entrance of the internal auditory canal. The percentage of tumor diameter reduction ranged from 20% to 40%.ConclusionsSome MRI features may demonstrate a spontaneous involution of VS and may be closely followed in asymptomatic or oligosymptomatic patients.Copyright © 2019 Elsevier Inc. All rights reserved.

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