Emphysematous Pyelonephritis in a Horseshoe kidney.

Emphysematous pyelonephritis is a necrotizing renal infection that results in the presence of gas in renal parenchyma, collecting system, and surrounding tissues. Ninety-five percent of the patients have underlying uncontrolled diabetes mellitus, but non-diabetic patients may be affected due to ureteral obstruction and infection with gas forming pathogens. Several poor prognostic factors have been described, such as thrombocytopenia, acute kidney failure, impaired consciousness, and shock. We present a case of a 41-year-old female who attends to the emergency department with signs of septic shock and diffuse abdominal pain. The diagnosis of emphysematous pyelonephritis in a horseshoe kidney was confirmed.