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Related Experiment Videos

Peripheral nerve hemangioblastoma

C Giannini1, B W Scheithauer, L C Hellbusch

  • 1Department of Pathology, Regional Hospital, Treviso, Italy.

Modern Pathology : an Official Journal of the United States and Canadian Academy of Pathology, Inc
|October 31, 1998
PubMed
Summary
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Capillary hemangioblastomas (HB), typically found in the central nervous system (CNS), can also occur in peripheral nerves. These rare peripheral nerve HBs share characteristics with CNS counterparts, requiring surgical intervention.

Area of Science:

  • Neurology
  • Oncology
  • Pathology

Background:

  • Capillary hemangioblastoma (HB) is a rare, benign, highly vascular tumor predominantly affecting the central nervous system (CNS), primarily in the posterior fossa and spinal cord.
  • While typically CNS-bound, HB occurrence in peripheral nerves is exceptionally rare, presenting diagnostic and therapeutic challenges.

Observation:

  • This report details three cases of peripheral nerve HB: two intradural tumors on a C4 nerve root and cauda equina, and one sciatic nerve lesion.
  • Patients ranged from 25-49 years old, with two diagnosed with von Hippel-Lindau disease, a known association with CNS HBs.
  • The peripheral nerve HBs were histologically indistinguishable from CNS HBs, featuring small caliber vessels, endothelial cells, pericytes, and characteristic stromal cells.

Findings:

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  • Tumor sizes varied from 1.5 to 5.5 cm, exhibiting well-circumscribed margins.
  • Stromal cells stained positively for vimentin and neuron-specific enolase, with focal S100 protein reactivity in one case.
  • Surgical management involved nerve root excision or microsurgical resection with fascicle preservation, depending on tumor extent.

    • Implications:

    • Peripheral nerve HBs are histologically similar to CNS counterparts, suggesting a shared origin or pathway.
    • Early diagnosis and tailored surgical approaches are crucial for successful management and preventing recurrence.
    • These findings expand the known spectrum of HB presentation and highlight the importance of considering peripheral nerve involvement in VHL disease.