Chronic Pyelonephritis

Question 1

What is the primary cause of Chronic Pyelonephritis?

Answer 1

Recurrent acute pyelonephritis

Question 2

In which population is Chronic Pyelonephritis almost always seen?

Answer 2

Pediatric patients

Question 3

What is a common characteristic of the kidney in a 4-year-old with Chronic Pyelonephritis?

Answer 3

Small, shrunken kidney with tubular atrophy and blunting and scarring of the renal calyces

Question 4

What is most likely to be seen on microscopic examination of a kidney affected by Chronic Pyelonephritis?

Answer 4

Tubular atrophy

Question 5

What condition might be indicated by kidney image showing tubular atrophy and scarring?

Answer 5

Congenital ureteral obstruction (results in chronic pyelo)

Question 6

What does the term ‘thyroidization of the kidney’ refer to?

Answer 6

A phrase applied to chronic pyelonephritis, though not emphasized by USMLE

Question 7

How does Chronic Pyelonephritis differ from Acute Pyelonephritis in terms of cellular infiltration?

Answer 7

Chronic pyelonephritis does not present with cellular infiltration

Question 8

What does Chronic Pyelonephritis refer to in terms of kidney condition?

Answer 8

Kidney being destroyed/shrunken from repeated prior infections

Question 9

Answer 9

Chronic pyelo: Kidney appears to show loss of architecture + scarring.