Complications of paranasal sinusitis still continue to be a serious health
problem. We present an orbits-related complication of sinusitis in a patien
t with diabetic ketoacidosis. It was not a rhinocerebral mucormycosis, but
a bacterial sinusitis-induced development of left cavernous sinus thromboph
lebitis and carotid artery occlusion. We discuss the diagnosis, surgical op
tions, and clinical outcome.