satellitosis
Clustering of glial cells around neurons, typically indicating neuronal injury or disease.
Full Definition
Satellitosis describes the pathological accumulation of glial cells, particularly microglia and astrocytes, around neuronal cell bodies in response to neuronal damage or stress. This reactive process represents an attempt by supporting cells to provide metabolic support or remove cellular debris. Satellitosis is commonly observed in various neurological conditions including viral encephalitis, ischemic injury, and neurodegenerative diseases. The degree and pattern of satellitosis can provide important diagnostic information about the nature and severity of underlying pathological processes affecting neurons.
Usage
Usage note: Distinguished from neuronophagia, where neurons are being actively phagocytosed.
In Context
- "Marked satellitosis was present around pyramidal neurons in the affected cortical areas." — Histopathological description
- "The pattern of satellitosis suggested ongoing neuronal stress rather than acute injury." — Diagnostic interpretation