Nasal encephalocele

Nasal encephalocele (also known as frontoethmoidal encephalocele or sincipital encephalocele) is a rare congenital neural tube defect in which brain tissue and meninges herniate through a defect in the skull base in the nasal region. This condition is classified under cephaloceles and specifically involves protrusion through the frontoethmoidal area, which includes the region around the nose, forehead, and orbits. The herniated tissue may present as a visible soft mass at the bridge of the nose, between the eyes, or within the nasal cavity. Nasal encephaloceles are present at birth and can vary significantly in size. The condition primarily affects the central nervous system and craniofacial structures. Key clinical features include a visible nasal or facial mass, nasal obstruction, widening of the nasal bridge (telecanthus or hypertelorism), and potential cerebrospinal fluid (CSF) leakage. Depending on the amount of brain tissue involved, patients may experience neurological complications including developmental delay, seizures, or visual disturbances. Recurrent meningitis is a serious risk due to the communication between the intracranial space and the nasal cavity. The severity of symptoms depends on the size of the defect and the volume of herniated neural tissue. Treatment is primarily surgical, involving repair of the skull base defect and repositioning or removal of the herniated tissue. Surgical approaches may include transcranial, transnasal, or combined techniques, often performed in infancy or early childhood to minimize complications and optimize neurodevelopmental outcomes. Advances in endoscopic endonasal surgery have improved outcomes for many patients. Multidisciplinary care involving neurosurgery, craniofacial surgery, otolaryngology, and developmental pediatrics is essential. Prognosis varies depending on the extent of brain involvement, but many patients achieve good outcomes with timely surgical intervention.

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