Escherichia coli primary aortitis presenting as sequelae of incompletely treated urinary tract infection.

We report a rare case of nonaneurysmal infectious aortitis (IA) with the causative microorganism being Escherichia coli. The patient was a 78-year-old man who presented with a 3-week history of abdominal pain, fevers, and anorexia after treatment for a urinary tract infection. The patient had positive blood cultures and a computed tomography scan that had signs of IA.