Difference between revisions of "Pyelonephritis"
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| − | + | *Pyelonephritis is inflammation of the renal pelvis and parenchyma. | |
| + | *Most often occurs in cows and sows. | ||
| + | *Main predisposing factor is urinary stasis which can occur due to pregnancy, following service in the sow, following uterine and bladder prolapse or the use of catheters in small animals. | ||
| + | *Usually occurs due to ascending bacterial infection from the lower urinary tract. | ||
| + | '''Gross pathology''' | ||
| + | *Kidney may be swollen with external patchy congestion. | ||
| + | *The medulla has streaks of inflammatory debris that extend into the cortex. | ||
| + | *The renal pelvis as well as the ureters are dilated and contain pus. | ||
| + | *In chronic cases, the kidney is shrunken, distorted and has gray patches among a diffuse, tan discolouration. The medulla has fibrous tracts that run into the capsule. | ||
| + | '''Histopathology''' | ||
| + | *Dilated tubules filled with [[Neutrophils|neutrophils]]. | ||
| + | *Presences of bacteria within the tubules. | ||
| + | *Necrosis of the pelvic epithelium and collecting tubules. | ||
| + | *In chronic cases, presence of fibrosis within the medulla as well as ascending fibrous tracts into the cortex. | ||
| + | '''Examples''' | ||
| + | *''[[Corynebacterium renale]]'' in cattle and ''Eubacterium suis'' in pigs. | ||
| + | '''Definitons''' | ||
| + | *''Pyelitis'' - infection involving the renal pelvis alone. | ||
| + | *''Pyonephritis'' - suppuration of the whole kidney. | ||
| + | |||
| + | |||
| + | [[Category:Tubulointerstitial Disease]] | ||
| + | |||
| + | [[Category:To Do - Urinary]] | ||
Latest revision as of 10:57, 13 April 2011
- Pyelonephritis is inflammation of the renal pelvis and parenchyma.
- Most often occurs in cows and sows.
- Main predisposing factor is urinary stasis which can occur due to pregnancy, following service in the sow, following uterine and bladder prolapse or the use of catheters in small animals.
- Usually occurs due to ascending bacterial infection from the lower urinary tract.
Gross pathology
- Kidney may be swollen with external patchy congestion.
- The medulla has streaks of inflammatory debris that extend into the cortex.
- The renal pelvis as well as the ureters are dilated and contain pus.
- In chronic cases, the kidney is shrunken, distorted and has gray patches among a diffuse, tan discolouration. The medulla has fibrous tracts that run into the capsule.
Histopathology
- Dilated tubules filled with neutrophils.
- Presences of bacteria within the tubules.
- Necrosis of the pelvic epithelium and collecting tubules.
- In chronic cases, presence of fibrosis within the medulla as well as ascending fibrous tracts into the cortex.
Examples
- Corynebacterium renale in cattle and Eubacterium suis in pigs.
Definitons
- Pyelitis - infection involving the renal pelvis alone.
- Pyonephritis - suppuration of the whole kidney.