Post-traumatic thrombosis of cavernous sinus and orbital veins has bee
n reported in conjunction with carotid-cavernous sinus fistula (CCSF).
CCSF are abnormal communications between the carotid artery and the c
avernous sinus. Spontaneous thrombosis of a CCSF is a rare event mainl
y seen in the indirect (dural) type of fistula. We report on a patient
with a possible post-traumatic CSSF which underwent partial spontaneo
us thrombosis and presented with an extreme degree of proptosis.