Discussion
Fusobacterium necrophorum causes
Answer: A
Correct answer: Lemierre’s syndrome, a septic jugular thrombophlebitis following pharyngitis
Fusobacterium necrophorum is a spindle-shaped Gram-negative anaerobe of the throat. In a young adult it may follow an ordinary sore throat by invading the parapharyngeal space, thrombosing the internal jugular vein and showering septic emboli to the lungs - the postanginal sepsis described by Lemierre. Cavitating lung lesions with a recent history of pharyngitis in a previously well adolescent should raise it at once. Madura foot and bacterial vaginosis have other causes, and rat-bite fever is due to Streptobacillus or Spirillum.
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