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July 22, 2026Ear Nose & Throat JournalOpen Access

An Internal Auditory Canal Arachnoid Cyst With MR Enhancement Mimicking Vestibular Schwannoma: A Rare Case Report

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Authors

YCY P ChenMCMiaona ChenLTLuqing Tong

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Overview

Case report shows MRI aids in distinguishing arachnoid cyst from vestibular schwannoma, suggesting better diagnostic accuracy.

Key Points

  • To report a rare case of an arachnoid cyst mimicking vestibular schwannoma in a 39-year-old female.
  • Patient presented with tinnitus and hearing loss over 9 years.
  • MRI imaging showed expanding cystic lesion in IAC with ring enhancement.
  • Intraoperative examination confirmed cyst enveloped by thickened arachnoid membrane.
  • MRI findings displayed complete cerebrospinal fluid signal suppression on FLAIR.
  • No diffusion restriction observed on DWI, suggesting an arachnoid cyst instead of a schwannoma.

Cite This Study

Chen et al. (2026) studied this question.

synapsesocial.com/papers/6a605e7c4163e025518d8368https://doi.org/10.1177/01455613261471276
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