Lemierre's syndrome: An often missed life-threatening infection.

Lemierre's syndrome is an uncommon, but fatal infection of the internal jugular vein (IJV) that is usually caused by Fusobacteirum necrophorum although a wide range of bacteria has been reported as causative agents. Typical symptoms include fever, sore throat, neck swelling, pulmonary symptoms and arthralgia; however, the diagnosis of this infection is frequently overlooked as initial manifestation might be subtle and non-specific. Definite diagnosis requires positive blood culture and radiological evidence of thrombus in the IJV. We describe a case of a patient with Lemierre's syndrome who was initially misdiagnosed with viral upper respiratory tract infection. High index of suspicion is pivotal to the diagnosis of this infection and Lemierre's syndrome should always be considered as a potential cause of sepsis in an otherwise healthy patient.