Presentation
Left nasal rhinorrhea
Patient Data
Age: 35 years
Gender: Female
From the case:
CSF fistula
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Normal paranasal sinuses CT scan. No appreciable bony defect can be seen.
From the case:
CSF fistula
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CSF fluid signal tracking is noted through the left side of cribriform plate extending to the left ethmoid air cells.
Case Discussion
CSF rhinorrhea refers to CSF leakage extracranially into paranasal sinuses due to osseous or dural defect of the skull base. MRI is the preferred diagnostic modality, where coronal reformations can depict the osseous defects with a greater degree of accuracy as well as 3D high-resolution T2W sequences (CISS) and MIP reconstruction can detect the leak tract accurately. CT can be normal in cases with minor defects.
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