This is a case report of Lemierre's syndrome, a septic thrombophlebitis of the 
internal jugular vein (IJV) usually preceded by pharyngitis and bacteraemia with 
an anaerobic organism. Fusobacterium necrophorum is ananaerobic Gram-negative 
bacillus and is the most common organism reported to cause Lemierre's syndrome 
which usually occurs one to three weeks post pharyngitis or oropharyngeal 
surgery. A 21-year-old patient presented with signs of sepsis and a history of 
sore throat, fever, and tender cervical lymph nodes. Blood cultures grew F. 
necrophorum and Computed Tomography (CT) showed a filling defect in the left 
retromandibular vein and thrombosis in the left internal jugular vein (IJV) 
consistent with Lemierre's syndrome. This is an uncommon condition which 
normally occurs in young individuals and diagnosis is often delayed.