Pyelonephritis
Marie is a 10 1/2 year old Siamese with Azotemia, pyuria (gram negative rod- MIC still pending) and Leukocytosis. All the hallmarks of a pyelonephritis. When I saw her yesterday she had been on IV diuresis and injectable Ampicillin and Baytril. The L kidney is small and IMO consistent with CKD (Interstitial nephritis). The R…