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Primary CNS lymphoma: findings outside the brain
1Department of Neurology, University of Tübingen, Germany.
Journal of Neuro-Oncology
|November 24, 1999
Summary
Primary central nervous system lymphoma (PCNSL) rarely disseminates systemically at diagnosis. Initial staging for PCNSL can be limited to blood tests and eye exams, as systemic involvement typically occurs late and doesn't alter the disease course.
Area of Science:
- Neurology
- Oncology
- Ophthalmology
Background:
- Primary central nervous system lymphoma (PCNSL) can affect the brain, leptomeninges, and eyes.
- Ocular lymphoma occurs in up to 20% of PCNSL patients and requires ocular irradiation.
- Systemic dissemination of PCNSL occurs in 7-8% of patients, predominantly in late stages.
Purpose of the Study:
- To evaluate the clinical significance of systemic dissemination in PCNSL.
- To determine the necessity of extensive systemic staging at initial PCNSL presentation.
Main Methods:
- Review of studies on systemic staging in PCNSL.
- Analysis of reported cases with occult systemic lymphoma at initial presentation.
Main Results:
- Extensive systemic staging at initial presentation is largely unrewarding for PCNSL.
- Only 10 patients with occult systemic lymphoma at initial presentation have been reported.
- Systemic lymphoma did not influence the disease course in these reported cases.
Conclusions:
- Initial staging for biopsy-confirmed PCNSL can be limited to routine blood tests (including HIV) and slit lamp examination.
- Systemic staging is generally not beneficial at the time of initial PCNSL diagnosis.
- Ocular involvement requires specific treatment, but systemic spread is typically a late-stage, non-influential event.