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.