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Case Reports
. 2024 Apr 8;85(2):e39-e42.
doi: 10.1055/a-2287-2108. eCollection 2024 Apr.

A Rare Presentation of Occipital Dermoid Cyst with Intracranial Extension and Secondary Infection: Case Report and Follow-Up

Guyu Li  1 , Jaechoon Kim  2 , Matthew Garcia  2 , Ivy Reyes-McChesney  3 , Ashley Hanna  4 , Utpal Bhalala  3
Affiliations
Case Reports

A Rare Presentation of Occipital Dermoid Cyst with Intracranial Extension and Secondary Infection: Case Report and Follow-Up

Guyu Li et al. J Neurol Surg Rep. .

Abstract

Craniofacial dermoid cysts are congenital anomalies that rarely have intracranial extension and can be associated with other anomalies. Common sites of these lesions are the lateral brow and parietal scalp. Presentation of the dermoid cyst in the occipital region with intracranial extension is extremely rare. We report a 2-year-old female with a presentation of an occipital dermoid cyst with intracranial extension and secondary cerebellar abscess. This case highlights the rarity of the presentation of an occipital dermoid cyst with intracranial extension and secondary infection and the importance of early imaging for suspected dermoid cysts in the occipital region for identification of intracranial extension.

Keywords: case report; intracranial abscess; occipital dermoid cyst; pediatrics.

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Conflict of interest statement

Conflict of Interest None declared.

Figures

Fig. 1
Fig. 1
Head computed tomography (CT) scan and brain magnetic resonance imaging (MRI) at the admission and follow-up. ( A ) Head CT scan demonstrated a posterior fossa mass and severe hydrocephalus. ( B ) At admission, brain MRI on sagittal T1-weighted sequence with contrast revealed a 3.7 × 2.6 cm multiloculated cystic mass (white arrow) in the right cerebellar hemisphere. ( C ) On postoperative day 7, brain MRI on sagittal T2-weighted sequence without contrast revealed significant interval improvement in cerebellar edema as well as transependymal seepage of cerebrospinal fluid (CSF). ( D ) Prior to discharge, brain MRI on sagittal T1-weighted sequence with contrast demonstrated increased leptomeningeal enhancement within the surgical bed of the posterior fossa. ( E ) At the 5-month follow-up, brain MRI on sagittal T2-weighted sequence without contrast showed there is no gross new parenchymal signal abnormality, there is no mass effect, midline shift, or basal cistern effacement, and the cerebellar tonsils terminate above the foramen magnum.
Fig. 2
Fig. 2
A small, cutaneous lesion in the occipital region with intermittent purulent drainage since 6 months of age.
Fig. 3
Fig. 3
Sites of craniofacial dermoid cysts.
See this image and copyright information in PMC

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