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[Primary diffuse meningeal melanomatosis. Case report].

Anna Bajer-Czajkowska1, Przemysław Nowacki

  • 1Katedra i Klinika Neurologii, Pomorska Akademia Medyczna w Szczecinie, Szczecin. bajeranka@wp.pl

Neurologia I Neurochirurgia Polska
|March 3, 2007
PubMed
Summary

Meningeal melanomatosis, a rare form of central nervous system melanoma, can present with diverse neurological symptoms. This case highlights the diagnostic challenges and postmortem confirmation of this rare condition.

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Area of Science:

  • Neuro-oncology
  • Neuropathology

Background:

  • Melanoma malignum is a rare central nervous system neoplasm, accounting for only 0.1% of cases.
  • It can manifest as a solid tumor or diffuse meningeal melanomatosis.

Observation:

  • A 44-year-old male presented with progressive neurological deficits including headaches, elevated cerebrospinal fluid protein, optic disc edema, hydrocephalus, seizures, cranial nerve palsies, and spinal root damage over 18 months.
  • Clinical presentation suggested diffuse leptomeningeal involvement.

Findings:

  • Despite extensive diagnostic efforts, primary diffuse meningeal melanomatosis was definitively diagnosed postmortem.
  • The case exhibited obstructive hydrocephalus secondary to extensive neoplastic infiltration, particularly affecting the cauda equina.

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Implications:

  • This case underscores the diagnostic difficulties in identifying primary diffuse meningeal melanomatosis, often leading to delayed or missed diagnosis.
  • The rarity of this condition, especially with obstructive hydrocephalus and cauda equina involvement, warrants increased awareness among clinicians.
  • Postmortem examination remains crucial for confirming rare neuropathological diagnoses like diffuse meningeal melanomatosis.