Iophendylate (Pantopaque), an oil-based contrast media, was introduced in 1940s and widely used in myelography, cisternography and ventriculography. Because of its low clearance rate, it caused chronic complications such as arachnoiditis and it was replaced by watersoluble medium after 1990s. However, the remnants are found on imaging tests even several decades later. A 65-year-old man visited with vertigo and sudden hearing loss on his right ear. Temporal bone magnetic resonance imaging conducted and two hyperintense nodules in left internal auditory canal on both T1- and T2-weighted images. Also, computed tomography revealed multiple intracranial hyperdense plaques. Additional history taking confirmed that patient received myelography 40 years ago, and the image findings were consistent with iophendylate.
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