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Asian J Neurosurg. 2019 Jan-Mar;14(1):269-271. doi: 10.4103/ajns.AJNS_304_17.

Unusual Radiological Presentation of Intracranial Dermoid Cyst: A Case Series.

Author information

1
Department of Radiology, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
2
Department of Neurosurgery, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
3
Department of Pathology, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.

Abstract

Intracranial dermoids are rare congenital lesions of the brain that account for < 1% of all intracranial tumors. Even though they are rare, typical computed tomography (CT) scan and magnetic resonance imaging (MRI) features along with location allow radiological diagnosis in the majority of patients. Radiologically, dermoid cysts typically appear as nonenhancing low-density masses on CT scan and are hyperintense on T1-weighted (T1-W) MRI sequences with variable signal on T2-W sequences. We describe two cases of dermoid with unusual imaging appearance with the presence of mural nodule in both the cases. The recognition of atypical radiological features can avoid diagnostic pitfalls and is clinically relevant for overall surgical management.

KEYWORDS:

Atypical; T2-weighted hypointensity; computed tomography; hyperdense; intracranial dermoid cyst; magnetic resonance imaging; unusual

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