Abstract
Intracranial dermoid cysts are congenital benign neoplasms mostly diagnosed in the pediatric hood and usually involve the midline structures. They count approximately less than 1% of all intracranial neoplasms and are believed to arise from ectopic cell rests incorporated in the closing neural tube. These dermoid cysts, especially those involving the posterior fossa and overlying the torcular, are uncommon. We report perhaps the first case of this entity in a third-year-old boy and discuss the physiopathogenesis, the imaging features and the best technical note to manage this cyst in this location.
Highlights
Cranial dermoid cysts are congenital neoplasms mostly diagnosed in the pediatric hood and usually involve the midline structures, especially in the supra- and parasellar region and the posterior fossa [1]
Intracranial dermoid cysts count approximately less than 1% of all intracranial neoplasms and are believed to arise from ectopic
Regarding the proximity of these masses with the torcular with possible adhesionsto these venial structures, and the possibility to have some vessels damages during intervention, we performeda posterior fossa craniectomy centred on the torcular that permitted to have the gross total removal of this lesion without vascular damage.We think, this technique is safe, reproducible and allows direct view and access to all the structures in this area
Summary
Cranial dermoid cysts are congenital neoplasms mostly diagnosed in the pediatric hood and usually involve the midline structures, especially in the supra- and parasellar region and the posterior fossa [1]. They are usually excised by pediatric surgeons because they become enlarged, infected, discharged fluid or for cosmetic reasons, or to allay parental anxiety [2]. These intracranial dermoid cysts, especially those involving the posterior fossa and overlying the torcular, are uncommon. We report perhaps the first case of this entity in a third old boy and discuss the pathogenesis, the imaging and the best therapeutic management in this location
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