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Intraventricular perineurioma: case report

C Giannini1, B W Scheithauer, J Steinberg

  • 1Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota 55905, USA.

Neurosurgery
|December 16, 1998
PubMed
Summary
This summary is machine-generated.

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This study reports the first central nervous system perineurioma, a rare nerve sheath tumor, found in the choroid plexus. The benign tumor was successfully resected and showed no recurrence, expanding the known locations for this neoplasm.

Area of Science:

  • Neuropathology
  • Neurosurgery
  • Oncology

Background:

  • Perineurioma is a rare, benign nerve sheath neoplasm typically found in soft tissues.
  • Intraneural and soft tissue perineuriomas have not been previously reported within the central nervous system.

Observation:

  • A case of a 65-year-old woman with a perineurioma originating in the choroid plexus of the third ventricle is presented.
  • The tumor caused obstructive hydrocephalus, necessitating surgical intervention.
  • Radiological and pathological analyses were performed.

Findings:

  • The perineurioma was surgically resected via frontal craniotomy and a transcallosal approach.
  • Microscopic, immunohistochemical (epithelial membrane antigen- and Collagen IV-positive, S-100 protein-negative), and ultrastructural features were consistent with soft tissue perineurioma.

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  • Short-term follow-up indicated no evidence of tumor recurrence.

    • Implications:

    • This case demonstrates that soft tissue perineuriomas can occur in the central nervous system.
    • The findings expand the differential diagnosis for central nervous system tumors.
    • Further research may elucidate the specific origins and behavior of CNS perineuriomas.