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Intermittent meningitic reaction with severe basophilia and eosinophilia in CNS leukaemia
Abstract:
Light- and electron-microscope studies were performed on CSF cells from a patient with CNS leukaemia presenting with an intermittent meningitic reaction. Numerous fully matured basophilic and eosinophilic granulocytes with excess glycogen content accompained undifferentiated leukaemic blast cells in the CSF. Such a CSF cell reaction has not been previously reported. It is suggested that this isolated CSF reaction represents a special type of immediate hypersensitivity reaction triggered by an abnormal leukaemic giant cell clone, and mitigated by the accompanying eosinophilic granulocytes.
Insights
This study reports a unique cerebrospinal fluid (CSF) cell reaction in a patient with central nervous system (CNS) leukemia. The findings suggest a novel hypersensitivity reaction involving leukaemic cells and granulocytes.
Area of Science:
- Neurology
- Hematology
- Immunology
Background:
- Central nervous system (CNS) leukemia can present with complex cellular reactions in cerebrospinal fluid (CSF).
- Understanding these reactions is crucial for diagnosis and treatment of CNS malignancies.
Observation:
- Microscopic examination of CSF cells revealed undifferentiated leukaemic blast cells.
- Numerous mature basophilic and eosinophilic granulocytes with abundant glycogen were observed alongside leukaemic cells.
Findings:
- The observed CSF cell composition, including mature granulocytes and leukaemic blasts, is previously unreported.
- This unique cellular response in CSF may represent a distinct type of immediate hypersensitivity.
Implications:
- The reaction is hypothesized to be triggered by an abnormal leukaemic giant cell clone.
- Eosinophilic granulocytes may play a role in mitigating this specific hypersensitivity reaction.