Choroid plexus and ependymal cells in CSF cytology

Area of Science:

• Neuropathology
• Cerebrospinal Fluid (CSF) Analysis
• Cellular Biology

Background:

• Choroid plexus and ependymal cells are crucial components of the central nervous system.
• Their presence in cerebrospinal fluid (CSF) is typically rare and requires specific diagnostic contexts.
• Understanding the origin and significance of these cells in CSF is important for neurological diagnostics.

Purpose of the Study:

• To investigate the occurrence and characteristics of choroid plexus and ependymal cells in CSF samples.
• To determine the association of these cells with specific neurological conditions.
• To explore the potential implications of these cellular findings in neuropathology.

Main Methods:

• Analysis of 2620 cerebrospinal fluid (CSF) cytograms.
• Identification and characterization of choroid plexus and ependymal cells.
• Acid phosphatase staining for cellular differentiation.

Main Results:

• Choroid plexus and ependymal cells were identified in only 10 out of 2620 CSF cytograms.
• Choroid plexus cells showed positive acid phosphatase staining, unlike ependymal cells.
• The presence of these cells correlated with neurological disorders primarily affecting the brain stem and spinal cord.

Conclusions:

• The detection of choroid plexus and ependymal cells in CSF is infrequent.
• These cells in CSF may serve as indicators for specific neurological disorders, particularly those involving the brain stem and spinal cord.
• Cellular loss or shedding might contribute to observed neuropathological findings like granular ependymitis.