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Mycotic abdominal aortic aneurysm due to Streptococcus suis: a case report
Kamphol Laohapensang1, Robert B Rutherford, Supapong Arworn
1Division of Vascular and Endovascular Surgery, Department of Surgery, Chiang Mai University Hospital, Chiang Mai, Thailand. klaohape@mail.med.cmu.ac.th
Surgical Infections
|October 3, 2009
Summary
Streptococcus suis can cause severe infections in humans, including a rare case of mycotic aneurysm. Early diagnosis and treatment are crucial for patients with bacteremia and a history of pork exposure.
Area of Science:
- Infectious Diseases
- Bacteriology
- Vascular Surgery
Background:
- Streptococcus suis is a significant swine pathogen with zoonotic potential.
- Human infections typically result from occupational exposure to pigs or pork products.
- Common presentations include meningitis, bacteremia, and less frequently, endocarditis or arthritis.
Observation:
- A 56-year-old male developed bacteremia and septic arthritis due to S. suis serotype 2 following pork contact.
- The patient subsequently presented with an abdominal aortic aneurysm.
- The aneurysm was successfully treated with surgical repair and antibiotics.
Findings:
- S. suis serotype 2 was identified as the causative agent of both bacteremia and the mycotic aneurysm.
- Polymerase chain reaction confirmed S. suis serotype 2 in tissue samples.
- The patient experienced an uncomplicated recovery after a course of parenteral and oral antibiotics.
Implications:
- This case highlights S. suis as a potential cause of mycotic aneurysms in adults.
- Clinicians should consider S. suis in patients with bacteremia and a history of pork exposure, especially those with vascular complications.
- Prompt recognition and management are vital for favorable outcomes in severe S. suis infections.
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