Nasal dermoid cyst with intracranial extension

Key words: Congenital midline mass, Endonasal endoscopic approach, Bony erosion

Nasal dermoid sinus cysts (NDSC) are rare congenital midline nasal lesions, accounting for over 60% of all midline nasal lesions in children. The frequency of intracranial extensions varies from 5% to 45% of cases. The gold standard for the treatment is surgical removal with complete associated sinus and skin tract. Many different surgical approaches have been described for the removal of NDSC, ranging from extracranial excision to complex procedures in which a combined extracranial-intracranial approach is required. The paper describes a case of NDSC in a child with intracranial extension treated with an endonasal endoscopic procedure. Magnetic resonance postoperative control after 4 months confirms the complete removal.