Perinephric abscess pointing into the posterior chest wall

Case contributed by Chris O'Donnell
Diagnosis almost certain

Presentation

Known chronic right ureteric obstruction by large upper ureteric calculus. Now severe right flank pain, fever and palpable loin mass.

Patient Data

Age: 60
Gender: Female

Grossly hydronephrotic right kidney due to a large ureteric calculus (arrow) with rupture of an upper pole calyx (arrow) producing a posterior peri/para-nephric collection that has perforated through the chest wall via the 11 - 12th rib interspace (arrow) entering the lateral erector spinae muscles.

Case Discussion

In the past it was not unusual for untreated, chronically obstructed/infected kidneys (pyonephrosis) to present as a loin mass/abscess.  It is now uncommon due to effective ureteric drainage with stents and liberal antibiotic use.  Occasionally it is now seen in individuals with poor access to medical care.  Treatment requires vigorous drainage of the abscess(es) and relief of ureteric obstruction.

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.