Aseptic Meningitis as First Presentation of Acute Myeloid Leukemia With Normal Cell Blood Count

Mahnaz Arian1, Abolghasem Allahyari2, Marzieh Kazerani3

  • 1Department of Infectious Diseases, Faculty of Medicine Mashhad University of Medical Sciences Mashhad Iran.

Clinical Case Reports
|October 15, 2025
PubMed

Insights

Aseptic meningitis can signal acute myeloid leukemia (AML) even with normal blood counts. Early consideration of leukemia is crucial, as a single spinal fluid test may miss malignant cells, delaying diagnosis.

Area of Science:

  • Neurology
  • Hematology
  • Oncology

Background:

  • Aseptic meningitis is often caused by infections or inflammatory conditions.
  • Acute myeloid leukemia (AML) can rarely present with neurological symptoms.

Purpose of the Study:

  • To highlight aseptic meningitis as a potential early sign of acute myeloid leukemia (AML).
  • To emphasize the diagnostic challenges and the need for thorough evaluation in suspected AML cases presenting with meningitis.

Main Methods:

  • Review of clinical cases presenting with aseptic meningitis and subsequently diagnosed with AML.
  • Analysis of diagnostic procedures, including cerebrospinal fluid (CSF) cytology and complete blood count (CBC).

Main Results:

  • Aseptic meningitis was the initial presentation in some AML patients.
  • Normal CBC results did not exclude the possibility of AML.
  • A single CSF analysis for malignant cells was sometimes insufficient for diagnosis.

Conclusions:

  • Aseptic meningitis should prompt consideration of underlying malignancies, particularly acute myeloid leukemia (AML).
  • A comprehensive diagnostic workup is essential, even with initially normal laboratory findings, to avoid delayed AML diagnosis.