Empyema, Subdural

**Definition:** An intracranial or rarely intraspinal suppurative process invading the space between the inner surface of the DURA MATER and the outer surface of the ARACHNOID.

**Tree numbers:** - C01.207.709.300 - C01.830.305.330 - C10.228.228.709.300 - C23.550.470.756.305.500

**Synonyms:** - Subdural Empyema