Intralaminar dural haemorrhage
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At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosuresAt the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures- Intralaminar dural haematoma
- Intralaminar dural hemorrhage
- Intralaminar dural hematoma
Intralaminar dural haematomas in the intracranial space, are exceedingly rare, and represent haemorrhage between the two layers of the dura mater. As a result, it has distinctive features allowing it to be distinguished from extradural haematomas but mimics subdural haematomas. They are equivalent to epidural haematomas of the spine.
Pathology
The haematoma occurs within the extradural neural axis compartment, located between the visceral layer (true dura or dura propria) and the parietal layer (cranial periosteum) and as such is actually in the same compartment as spinal epidural haematomas (rather than extradural haematomas that represent subperiosteal haematomas on the inside of the skull).
Radiographic features
Unlike extradural haematomas, intralaminar haematomas are not confined by sutures but extend to the dural venous sinuses as they are within the same space as the sinuses.
Unless a subdural haematoma is also present, they can be difficult to separate from true subdural haematomas (which occur between the arachnoid mater and the inner layer of the dura), as both will cross sutures, but be confined by dural sinuses.
References
- 1. Chung CK, Kim YM, Chi JG. Intralaminar dural haematoma developing in the contralateral convexity after temporal lobectomy. J. Neurol. Neurosurg. Psychiatr. 1999;66 (2): 248-9. doi:10.1136/jnnp.66.2.248 - Free text at pubmed - Pubmed citation
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