EAS Publisher | Spontaneous Meningoencephalocele of the Sphenoid Sinus: Clinical and Radiological Insights

Spontaneous Meningoencephalocele of the Sphenoid Sinus: Clinical and Radiological Insights

DOI : https://doi.org/10.36349/easjrit.2026.v08i03.002

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Sphenoid sinus meningoencephaloceles are rare basal skull defects characterized by herniation of meninges and brain tissue into the sphenoid sinus. They can present with nonspecific symptoms such as chronic headache and may be mistaken for benign sinus pathology. We report a case of a patient with persistent headache and CSF rhinorrhoea in whom imaging revealed herniation of the right temporal lobe and the meninges through a bony defect in the right lateral wall of the sphenoid sinus, identified by High Resolution CT of the paranasal sinuses and MR Cisternography. This case underscores the importance of considering skull base defects in the differential diagnosis of isolated sphenoid sinus lesions and highlights the utility of combined CT and MRI imaging. Timely diagnosis and surgical intervention are crucial to prevent complications such as meningitis or neurologic deterioration.

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