Salmonella Mississippi: An unusual cause of renal abscess in an immunocompetent patient

Renal abscess is a rare manifestation of Salmonella infection. This usually occurs in the presence of risk factors that include immunosuppression, renal stones and urinary structural abnormality. We describe a 19-year-old male with no risk factors who developed a left renal abscess and gram-negative sepsis caused by Salmonella Mississippi. This was managed successfully with percutaneous drainage of the abscess and a prolonged course of antibiotics. To our knowledge, this is the first reported case of Salmonella Mississippi as a cause for renal abscess in an individual with no identifiable risk factors.