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Carcinomatous Meningitis from Unknown Primary Carcinoma

L Favier1, L Ladoire, B Guiu

  • 1Department of Medical Oncology, Center Georges Francois Leclerc, General Hospital, Dijon, France.

Case Reports in Oncology
|August 26, 2010
PubMed

Insights

Carcinomatous meningitis (CM), a rare cancer complication, was diagnosed in a patient with no identifiable primary tumor. This case highlights the diagnostic challenges of CM from an unknown primary origin.

Area of Science:

  • Neurology
  • Oncology
  • Pathology

Background:

  • Carcinomatous meningitis (CM) affects 3-8% of cancer patients, often presenting with focal neurological symptoms.
  • Diagnosis relies on detecting cancer cells in cerebrospinal fluid (CSF) via cytopathological examination.
  • Palliative care can improve quality of life and survival despite the generally poor prognosis.

Observation:

  • A patient presented with vertigo, tinnitus, and hearing loss, progressing to diffuse facial nerve paralysis.
  • Cerebrospinal fluid analysis confirmed carcinomatous meningitis.
  • Extensive investigations failed to identify the primary tumor's origin.

Findings:

  • This is the first reported English-language case of carcinomatous meningitis originating from a carcinoma of unknown primary.
  • The patient's symptoms, including cranial nerve palsies, were indicative of leptomeningeal metastasis.
  • Diagnostic confirmation was achieved through CSF cytology.

Implications:

  • CM from an unknown primary presents unique diagnostic and management challenges.
  • This case underscores the importance of considering leptomeningeal metastasis even when a primary tumor is not evident.
  • Further research into the mechanisms and optimal treatment of CM from unknown primaries is warranted.

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