Sphenoid Sinusitis Presenting as Cavernous Sinus Thrombosis in a Diabetic Patient

Isolated sphenoid sinusitis is a very rare and potentially lifethreatening occurrence. Because of its rarity, its true incidence is difficult to establish, but it lies within the range of 2.7% to 8% based on larger series [1-3]. The incidence of isolated fungal disease is even lower. sphenoid sinusitis represents a challenge diagnostically as it does not present in a similar way to inflammation of the other paranasal sinuses, presenting symptoms being generally nonspecific [4].