Renal abscess (subcapsular)

Case contributed by Townsville radiology training
Diagnosis almost certain

Presentation

With hx of autism. Febrile

Patient Data

Age: 4
Gender: Male
ultrasound

3.4 cm x 2.7 cm 1.8 cm hypoechoic collection in superior pole of left kidney displacing + distorting adjacent renal parenchyma suggesting subcapsular location. Low internal echoes but no vascularity.

Case Discussion

We aspirated the collection but decided against putting a drain given his age and history of autism, the risk of complication if he pulled out the drain was too high.

renal abscess, like any other abscess, is a collection of infective fluid at abuts the kidney. It is usually a sequelae of acute pyelonephritis, where severe vasospasm and inflammation may occasionally result in liquefactive necrosis and abscess formation.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.