Royal College of Surgeons in Ireland
Albastaki-2021-An Intracranial Extradural Derm.pdf (1.23 MB)

An intracranial extradural dermoid cyst presenting with two dermal sinuses and an abscess in a child

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Version 2 2022-07-19, 10:08
Version 1 2022-01-05, 17:14
journal contribution
posted on 2022-07-19, 10:08 authored by Aysha Albastaki, Reem AlThawadi, Janan Alajaimi, Khawla AliKhawla Ali, Talal AlmaymanTalal Almayman
Dermoid cysts account for only a small fraction of intracranial masses, with extradural dermoid cysts being considered a much rarer entity than those located intradurally. Intracranial dermoid cysts vary in clinical presentations: some maybe asymptomatic whilst others harbor features of raised intracranial pressure, neurological deficits, or even aseptic meningitis. Dermoid cysts may also present with cutaneous lesions. Herein, we report a rare case of a 1-year-old female presenting with a midline, scalp abscess. Brain MRI revealed an intracranial, extradural tumor, with features suggestive of a dermoid cyst, unusually located in the crista galli, and complicated by the formation of two cutaneous sinus tracts. After identification and characterization by MRI, bitemporal craniotomy was performed with complete excision of the mass and sinus tracts. Histological analysis confirmed dermoid cyst as the final diagnosis. Postoperatively, the patient recovered fully and had no evidence of recurrence in subsequent visits. The case mentioned above highlights the rarity of such a presentation for an intracranial extradural dermoid cyst and the vitality of early imaging for midline cutaneous lesions for identification of intracranial extensions and avoidance of detrimental consequences.



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Published Citation

Albastaki A, AlThawadi R, Alajaimi J, Ali KF, Almayman T. An intracranial extradural dermoid cyst presenting with two dermal sinuses and an abscess in a child. Case Rep Neurol Med. 2021;2021:9917673.

Publication Date

26 July 2021

PubMed ID



  • RCSI Bahrain


Hindawi Pub. Corp.


  • Published Version (Version of Record)