Figure 4: HRCT and intra-operative findings of a patient who presented after endoscopic sinus surgery with intermittent rhinorrhea. HRCT image guidance helped to identify a right fovea ethmoidalis defect and a small meningoencephalocele. A. Coronal View, B. Sagittal View, C. Axial View, D. Intra-Operative Endoscopic View.