Diagnosis and Management of Lemierre's Syndrome

Clinical Presentation and Diagnosis

The American College of Physicians recommends considering Lemierre's syndrome in patients presenting with pharyngitis, neck pain, and septic pulmonary emboli, and gram-negative rods in blood culture suggest Fusobacterium necrophorum as the causative organism 2, 3
The presence of Fusobacterium necrophorum, an anaerobic gram-negative rod, in blood culture is a strong indicator of Lemierre's syndrome, which is a suppurative thrombophlebitis of the internal jugular vein 2, 3

The American College of Radiology recommends CT neck with IV contrast as the gold standard imaging modality to identify the source of infection and detect life-threatening complications, including internal jugular vein thrombosis and extension to the mediastinum 1
Immediate empiric antibiotics covering Fusobacterium necrophorum, Streptococcus species, Staphylococcus aureus, and oral anaerobes must be initiated while awaiting imaging, typically a beta-lactam/beta-lactamase inhibitor plus metronidazole or clindamycin 1
Surgical consultation is mandatory if CT demonstrates a drainable abscess, as medical therapy alone may be insufficient 1