(a)
(b)
Figure 2: Total opacification of the left sphenoid sinus () consistent with sinusitis. An infective pseudoaneurysm (arrow) from the cavernous segment of the left ICA protrudes into the left sphenoid sinus and sella turcica (a). Bulging with heterogeneous enhancement of the bilateral cavernous sinuses (arrows) represents thrombophlebitis (b).