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Cerebrospinal fluid pleocytosis in acute lymphoblastic leukemia without central nervous system relapse: a report of

A F Oner1, S Yetgin, D Uçkan

  • 1Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara.

The Turkish Journal of Pediatrics
|April 19, 2000
PubMed

Insights

In acute lymphoblastic leukemia (ALL) patients undergoing maintenance therapy, a flu-like illness may cause temporary mononuclear cells in cerebrospinal fluid (CSF). This finding doesn't always indicate central nervous system (CNS) disease, requiring careful clinical evaluation before treatment decisions.

Area of Science:

  • Hematology
  • Oncology
  • Neurology

Background:

  • Acute lymphoblastic leukemia (ALL) requires ongoing monitoring during maintenance therapy.
  • Cerebrospinal fluid (CSF) analysis is crucial for detecting central nervous system (CNS) involvement.
  • Distinguishing true CNS disease from other causes of CSF abnormalities is vital.

Observation:

  • Three ALL patients presented with mononuclear cells in their CSF following a flu-like illness.
  • These patients were on maintenance treatment at the time of observation.
  • No clinical or laboratory evidence of CNS involvement was found in these patients.

Findings:

  • Elevated mononuclear cells (> 5 cells/microl) in CSF after a flu-like illness can occur in ALL patients.
  • This CSF finding does not necessarily confirm CNS leukemia.
  • Cell morphology and clinical context are critical for accurate diagnosis.

Implications:

  • Over-treatment of presumed CNS disease can be avoided by careful evaluation.
  • Understanding non-pathological causes of CSF pleocytosis is important in ALL management.
  • Further investigation into the mechanisms causing transient CSF changes is warranted.

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