The interdural hematoma: A subtype of convexity subdural/dural hematoma with specific radioanatomical characteristics.
Dural beak sign
Dural border cells
Endoscopic evacuation
Interdural hematoma
Radiological anatomy
Subdural hematoma
Journal
Surgical neurology international
ISSN: 2229-5097
Titre abrégé: Surg Neurol Int
Pays: United States
ID NLM: 101535836
Informations de publication
Date de publication:
2023
2023
Historique:
received:
05
07
2023
accepted:
15
08
2023
medline:
9
10
2023
pubmed:
9
10
2023
entrez:
9
10
2023
Statut:
epublish
Résumé
Rare cases of biconvex hematomas splitting the convexity dura mater were reported and denominated interdural hematoma (IDH). Due to their rarity, little is known about their radiological characteristics, and in most cases, their invasive management with craniotomy and dural membrane excision is unnecessary. We report here a case of single burr-hole endoscopic evacuation of an IDH and its complete resolution after the 6-month follow-up imaging. The literature review reveals 11 reported cases of IDH. Most of them are male and the mean age is 65 years (range 51-90). Most of the reported IDHs were misdiagnosed as epidural hematoma or meningioma, and therefore, they have been managed invasively through craniotomy with dural excision. Diagnosis of the interdural nature was confirmed macroscopically during surgery in all cases and histology was reported for 6 cases. Image analysis found a double dural beak sign and biconvex shape on coronal planes, subarachnoid space enlargement at the collection extremities, and irregular thick inner wall as common radiological aspects of the IDH. IDH is a rarely reported and often misdiagnosed dural hematoma subtype. Its invasive treatment through craniotomy is likely related to its unknown radiological characteristics. We review and raise awareness about potentially unique radiological anatomy that could avoid unnecessary invasive treatment. Moreover, we report the first case of endoscopically evacuated IDH with long-term follow-up imaging showing complete resolution.
Sections du résumé
Background
UNASSIGNED
Rare cases of biconvex hematomas splitting the convexity dura mater were reported and denominated interdural hematoma (IDH). Due to their rarity, little is known about their radiological characteristics, and in most cases, their invasive management with craniotomy and dural membrane excision is unnecessary.
Case Description
UNASSIGNED
We report here a case of single burr-hole endoscopic evacuation of an IDH and its complete resolution after the 6-month follow-up imaging. The literature review reveals 11 reported cases of IDH. Most of them are male and the mean age is 65 years (range 51-90). Most of the reported IDHs were misdiagnosed as epidural hematoma or meningioma, and therefore, they have been managed invasively through craniotomy with dural excision. Diagnosis of the interdural nature was confirmed macroscopically during surgery in all cases and histology was reported for 6 cases. Image analysis found a double dural beak sign and biconvex shape on coronal planes, subarachnoid space enlargement at the collection extremities, and irregular thick inner wall as common radiological aspects of the IDH.
Conclusion
UNASSIGNED
IDH is a rarely reported and often misdiagnosed dural hematoma subtype. Its invasive treatment through craniotomy is likely related to its unknown radiological characteristics. We review and raise awareness about potentially unique radiological anatomy that could avoid unnecessary invasive treatment. Moreover, we report the first case of endoscopically evacuated IDH with long-term follow-up imaging showing complete resolution.
Identifiants
pubmed: 37810308
doi: 10.25259/SNI_564_2023
pii: 10.25259/SNI_564_2023
pmc: PMC10559375
doi:
Types de publication
Case Reports
Langues
eng
Pagination
316Informations de copyright
Copyright: © 2023 Surgical Neurology International.
Déclaration de conflit d'intérêts
There are no conflicts of interest.
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