Fig. 8
From: Imaging findings of the orbital and intracranial complications of acute bacterial rhinosinusitis
Cavernous sinus thrombosis case 1: a) Axial ceCT image in a soft tissue window at the level of the skull base showing normal enhancement of the cavernous sinus (arrows). b) ceCT in a different patient showing filling defects in the cavernous sinus with slight enlargement on the left side (arrow), indicative of thrombosis. Axial images at different levels in the same patient showing c) opacification of the sphenoid (arrow) and ethmoid sinuses in bone window and d) an extradural fluid collection with meningeal enhancement suspicious for empyema in soft tissue window