Chronic pyelonephritis

Chronic pyelonephritis is form of pyelonephritis where there are longstanding sequelae of renal infection. At the time of writing there is still no definitive consensus at to whether the condition represents an active chronic infection, arises from multiple recurrent infections, or represents stable changes from a remote single infection, as radiographic differentiation between the above scenarios can be challenging.

In general, bacterial infection results in focal scarring in the renal cortex overlying a calyx, and is usually associated with some kind of calyceal distortion.

Imaging should be interpreted in the relevant clinical context and is often characterised by 1

The long term complications are not completely understood, but there does not appear to be an association with hypertension or progressive renal azotemia.

Once the imaging changes of chronic pyelonephritis have been established, repeat imaging is seldom provides new findings.

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Article information

rID: 36717
System: Urogenital
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Chronic renal pelvic infection
  • Chronic renal pelvic inflammation

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Cases and figures

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    Case 1: bilateral
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    Case 2: on right
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