Renal emphysema secondary to traumatic renal infarction

Area of Science:

• Nephrology
• Radiology
• Pathology

Background:

• Renal emphysema is characterized by the presence of gas within the kidney parenchyma.
• It is most commonly associated with emphysematous pyelonephritis, a severe kidney infection often seen in diabetic patients.
• Gas formation in the renal collecting system or parenchyma is typically caused by infection with gas-forming microorganisms.

Observation:

• Intrarenal gas, or renal emphysema, can manifest under noninfective conditions.
• This report details a rare case of renal emphysema.
• The condition developed subsequent to a traumatic renal infarction.

Findings:

• The case demonstrates that renal emphysema is not exclusively linked to infectious etiologies.
• Traumatic renal infarction can serve as a precursor to the development of intrarenal gas.
• This finding expands the differential diagnosis for renal emphysema.

Implications:

• Understanding noninfective causes of renal emphysema is crucial for accurate diagnosis and management.
• Clinicians should consider traumatic events, such as renal infarction, in the differential diagnosis of renal emphysema.
• Further research may elucidate the mechanisms underlying gas formation in noninfective renal conditions.