Focal pyelonephritis (lobar nephronia)

Case contributed by Stefan Lazic
Diagnosis almost certain

Presentation

Fever and right upper back pain.

Patient Data

Age: 20 years
Gender: Female

Stills

ultrasound

The right kidney shows an irregular rounded area of mixed reflectivity in the right inter-polar region and does not demonstrate any color flow.

Cine loop 1

ultrasound

The right kidney shows an irregularly rounded area of mixed reflectivity in the right inter-polar region.

Cine loop 2

ultrasound

Right kidney. Irregular rounded area of mixed reflectivity in the right inter-polar region.

Case Discussion

Focal pyelonephritis is evidenced by increased reflectivity surrounding one of the inter-polar calyces. No perinephric collections. The patient went on to make a full recovery with no complications.

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