Fig. 4From: CSF rhinorrhea: non-contrast CT, contrast-enhanced CT cisternography or combined?Non-contrast CT in coronal (A), CT cisternography in coronal (B), sagittal (C) and axial (D) planes show defect measuring 6 mm in the roof of the right ethmoid sinus (white arrow) (A and B) with evidence of contrast leak through this defect in addition to herniated brain tissue from the right frontal lobe (black arrow) (C and D)Back to article page