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Free Content Pineal Germinoma with Periaqueductal Subependymal Spread: A Rare Cause of Bilateral Hypertrophic Olivary Degeneration

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HOD is an uncommon pathologic entity with specific clinical and radiologic patterns caused by an injury to the dentato-rubro-olivary pathway called the TGM. The described causes of injury to the TGM include infarction, demyelination, hemorrhage, trauma, or surgery. We describe a case of pineal germinoma infiltrating the bilateral red nuclei, which is a rare cause of bilateral HOD.
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Keywords: FLAIR = fluid-attenuation inversion recovery; HOD = hypertrophic olivary degeneration; TGM = triangle of Guillain and Mollaret

Document Type: Research Article

Publication date: December 1, 2012

More about this publication?
  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities.

    Visit to view all available CME courses.

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