Case Report: Reversible acquired Chiari-like state and upper cervical syringomyelia caused by a giant posterior tentorial tumor confined to the supratentorial compartment - Takeaways - MDSpire

Case Report: Reversible acquired Chiari-like state and upper cervical syringomyelia caused by a giant posterior tentorial tumor confined to the supratentorial compartment

  • By

  • Pablo Albiña-Palmarola

  • Ali Khanafer

  • Gottlieb Maier

  • Ketevan Mikeladze

  • Philipp von Gottberg

  • Oliver Ganslandt

  • Hans Henkes

  • July 15, 2026

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  • 1

    A 39-year-old woman presented with progressive headache, papilledema, and left homonymous hemianopia due to a large posterior tentorial tumor.

  • 2

    Imaging revealed a 4.9 × 7.1 × 7.0-cm extra-axial mass causing significant mass effect and 7-mm caudal tonsillar descent.

  • 3

    The patient underwent preoperative embolization followed by near-total microsurgical resection of the tumor.

  • 4

    Post-treatment MRI showed resolution of the syrinx, restoration of tonsillar position, and significant visual recovery.

  • 5

    This case illustrates that acquired Chiari-like malformation and syringomyelia can be secondary to supratentorial lesions.

Original Source(s)

Case Report: Reversible acquired Chiari-like state and upper cervical syringomyelia caused by a giant posterior tentorial tumor confined to the supratentorial compartment

  • by Pablo Albiña-Palmarola, Ali Khanafer, Gottlieb Maier, Ketevan Mikeladze, Philipp von Gottberg, Oliver Ganslandt, Hans Henkes

  • July 15, 2026

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