Aerococcus urinae Aortitis: A Case Report

BACKGROUND: Aerococcus urinae is a Gram-positive coccus that is increasingly recognized as a urinary pathogen since the introduction of mass spectrometry for identification of bacteria. We report a case of abdominal aortitis (with aneurysm) caused by A urinae in a male with recurrent urinary tract infections and recently treated A urinae bacteremia. A 63-year-old gentleman with a history of A urinae urosepsis 7 weeks prior, presented to the Emergency Department with thoracolumbar back pain radiating bilaterally into the groin. Radiological and surgical findings were consistent with infective infrarenal aortitis with aneurysm. METHODS: The patient successfully underwent open surgical debridement and reconstruction of the infrarenal aorta with autologous vein graft. RESULTS: Aerococcus urinae was isolated from excised tissue. The patient completed a 4-week course of intravenous antimicrobial therapy. CONCLUSIONS: Aurinae is a urinary pathogen with the ability to cause severe invasive disease including endovascular infections.