Pneumococcal urinary antigen test: A tool for pneumococcal aortitis diagnosis?
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Updated: Feb 7, 2026
Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Stanislas Abrard1, Benoit Cousin1, Thomas Reydel1
1Département d'Anesthésie Réanimation, Anesthesiology and Intensive Care Department, Centre Hospitalier Universitaire d'Angers, Angers University Hospital, 4 Rue Larrey, 49100 Angers, France.
Introduction:
Aortitis is rare. The etiological diagnosis is difficult but essential for treatment. Even with appropriate treatment mortality remains high. We present a case of pneumococcal aortitis followed by a brief review of the literature.
Presentation Of Case:
In this case, the aortic disease was characterized by multiple inflammatory aneurysms. Blood cultures were negative but urine was tested for the presence of pneumococcal urinary antigen postoperatively was positive. Treatment consisted of antibacterial therapy and both surgical and endovascular procedures. The patient was discharged and is well.
Discussion:
Preoperative determination of etiology is crucial in implementing a specific treatment. Pneumococcus is a common bacterium in infectious aortitis. Identification of the causative microbe is necessary to guide antimicrobial therapy. Blood cultures are frequently sterile. The pneumococcal urinary antigen test may be more sensitive than blood cultures, as is the case in pneumococcal pneumonia.
Conclusions:
The pneumococcal urinary antigen test may was a useful diagnostic tool in establishing the cause for aortitis in this case. Its potential value should be assessed in furthers studies.
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