The authors report on two patients with PNETs who presented with progressive audiovestibular symptoms. In each case magnetic resonance MR imaging revealed an extraaxial lesion that filled the internal auditory meatus and exhibited the neuroimaging features of a vestibular schwannoma VS.
No high signal intensity was apparent in either the brainstem or adjacent cerebellum on T 2 -weighted MR images. Surgery with maximum resection total in one case and subtotal in the other was performed, followed by craniospinal radiotherapy. One year postoperatively, both patients were free from tumor. A CPA PNET mimicking a VS is a rare entity, the diagnosis of which is important because its treatment differs dramatically from that of VS, including prescribed surgery followed by conventional craniospinal radiotherapy.
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Stereotact Funct Neurosurg 61 Suppl 1 : 51β58, AJNR β, N Engl J Med β, J Laryngol Otol β, Acta Neurochir Suppl β, Pediatr Neurosurg β, J Neuropathol Exp Neurol β, J Neurosurg Spine 2 , Neurosurg Rev β, A case report and review of the literature.
Br J Neurosurg 90β92, Histopathology 33 : β , Tsuji S, Hisaoka M, Morimitsu Y, et al: Peripheral primitive neuroectodermal tumour of the lung: report of two cases. Histopathology β, Br J Neurosurg 7: 91β94, All rights reserved, including those for text and data mining, AI training, and similar technologies. My Stuff Sign in Sign up. Advanced Search Help. Extraaxial primitive neuroectodermal tumor mimicking a vestibular schwannoma: diagnostic and therapeutic difficulties Report of two cases. Restricted access.
