| subdural cleft | Originally thought to be a narrow fluid-filled interval between the dural and arachnoid; now known to be an artificial space created by the separation of the arachnoid from the dura as the result of trauma or some ongoing pathologic process; in the healthy state, the arachnoid is attached to the dura and a naturally occurring subdural space is not present. Synonym: spatium subdurale, cavum subdurale, subdural cavity, subdural cleavage, subdural cleft. (05 Mar 2000) |
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| subdural effusion | The leakage of cerebrospinal fluid into the subdural space. (12 Dec 1998) |
| subdural haematoma | <neurology, surgery> A serious type of head injury characterised by a collection of blood under the dura mater adjacent to the brain. Acute subdural haematomas are a surgical emergency that usually result from head trauma. (06 Mar 1998) |
| subdural haematorrhachis | haematorrhachis externa |
| subdural haemorrhage | Extravasation of blood between the dural and arachnoidal membranes; acute and chronic forms occur; chronic haematomas may become encapsulated by neomembranes. Synonym: subdural haematoma. (05 Mar 2000) |
| subdural hygroma | Accumulation in the subdural space of proteinaceous fluid, usually derived from serum, or of cerebrospinal fluid due to a tear in the arachnoid membrane. (05 Mar 2000) |
| subdural space | Originally thought to be a narrow fluid-filled interval between the dural and arachnoid; now known to be an artificial space created by the separation of the arachnoid from the dura as the result of trauma or some ongoing pathologic process; in the healthy state, the arachnoid is attached to the dura and a naturally occurring subdural space is not present. Synonym: spatium subdurale, cavum subdurale, subdural cavity, subdural cleavage, subdural cleft. (05 Mar 2000) |