J Korean Soc Radiol.  2014 Nov;71(5):197-200. 10.3348/jksr.2014.71.5.197.

Hypervascular Vestibular Schwannoma: A Case Report

• Kim JY
• Yu IK

• KMID: 2208788
• DOI: http://doi.org/10.3348/jksr.2014.71.5.197

Abstract

Most vestibular schwannoma is hypovascular with well known poor tumor staining in cerebral angiography. However, hypervascular vestibular schwannoma might be observed as a rare subtype with increased risk of bleeding during surgery. Multimodal imaging features which represent hypervascularity of the tumor can be observed in hypervascular vestibular schwannoma. Here we report a case of hypervascular vestibular schwannoma with brief literature review.

MeSH Terms

Cerebral Angiography
Hemorrhage
Magnetic Resonance Imaging
Multimodal Imaging
Neuroma, Acoustic*

Figure

• 

  Fig. 1 A 52-year-old female with hypervascular vestibular schwannoma. A. Early arterial enhanced CT reveals prominent enhancing vessels in and around the tumor. B. T2-weighted image shows intratumoral and peritumoral signal void structures. C. Enhanced T1-weighted image shows inhomogeneous strong enhancement with focal internal auditory canal tumor portion. D. Perfusion MRI shows markedly increased relative cerebral blood volume of the left cerebellopontine angle mass. E-G. Cerebral angiography reveals early tumor staining, supplied by the left anterior inferior cerebellar artery and by the left middle meningeal artery (arrows) (E, F). And engorged draining vein with early venous filling is also seen (arrow) (G). H. Hematoxylin and eosin staining (× 200) shows cellular pattern with strongly stained nuclear palisading with hyaline vessel walls.

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