Renal emphysema.
D000368:Aged; D003928:Diabetic Nephropathies; D004646:Emphysema / Q000150:complications; D006801:Humans; D007238:Infarction / Q000150:complications; D007668:Kidney / Q000098:blood supply; D007674:Kidney Diseases; D008297:Male; D011704:Pyelonephritis / Q000150:complications