Radiological management of cerebrospinal fluid rhinorrhea

Cerebrospinal fluid (CSF) rhinorrhea results in high morbidity and mortality if left untreated. Surgical intervention is recommended in such cases; however, success is dependent on correct diagnosis and precise localization of leak site. Imaging plays a very essential and indispensable role. Imaging also plays a very important role in identifying the cause of leak and planning surgery. The radiological investigations used in evaluation of CSF rhinorrhea evolved over time from simple tests to very sophisticated and highly accurate procedures. Correct diagnosis and localization of leak depends on proper selection and adequate technique of radiological examinations. Sound knowledge in the current radiological investigations for CSF rhinorrhea, including the yield, indications, contraindications, complications, and selection, is essential for both treating physician and radiologist.