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  • Title: Pantopaque contrast mimicking intracanalicular vestibular schwannoma.
    Author: Deep NL, Patel AC, Hoxworth JM, Barrs DM.
    Journal: Laryngoscope; 2017 Aug; 127(8):1916-1919. PubMed ID: 27726152.
    Abstract:
    Pantopaque (iophendylate) is an oily contrast medium historically used during spine imaging. Due to its persistence in the subarachnoid space and the potential to lead to severe arachnoiditis, it is no longer used today. We present a 40-year-old male with new-onset headaches, imbalance, and vertigo. Brain magnetic resonance imaging revealed a 2-mm T1 -hyperintense intracanalicular lesion. Numerous hyperdense foci were scattered throughout the subarachnoid space on computed tomography. Further history revealed the patient received Pantopaque 30 years prior, after sustaining spinal trauma. Remnant Pantopaque contrast is an important differential when evaluating a patient with a suspected intracranial tumor in order to avoid unwarranted surgical intervention. Laryngoscope, 127:1916-1919, 2017.
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