A case of an enterorenal fistula and pyelonephritis with air in the renal pelvis

Enterorenal Fistula as an Unusual Complication from Ureteroscopic Lithotripsy: A Case Report

Background: This case highlights an enterorenal fistula as a rare complication from ureteroscopic lithotripsy. Case Presentation: A 56-year-old woman with significant obesity, decompensated cirrhotic and ascitic liver disease, hypertension, type 2 diabetes mellitus, and nephrolithiasis treated with five prior ureteroscopic lithotripsies for a partial left staghorn stone presented to the emergency department (ED) with worsening left flank pain and sepsis. A CT scan of the abdomen and pelvis with contrast showed a large left perinephric hematoma. She underwent drain placement and during fluoroscopic imaging, there was a fistula from the left subcapsular hematoma/abscess to the proximal descending colon. The patient wished to proceed with a surgical course involving nephrectomy with hemicolectomy despite extensive counseling regarding her high mortality risk. However, because of worsening nutritional status as well as several other high-risk comorbidities, a shared decision was made with the patient to postpone the procedure. The patient was discharged to a skilled nursing facility for nutritional optimization and prehabilitation; however, she continued to decline with recurrent sepsis and cirrhosis-related complications and unfortunately passed away. Conclusion: A subscapular hematoma evolving into a perinephric abscess is a rare but known complication of ureteroscopic lithotripsy; however, this patient developed an enterorenal fistula that has yet to be reported after repeated ureteroscopy.

[Renoduodenal fistula. A case report]

The fistula between kidney and duodenum is rare. It occurs mostly in case of pyonephrotic kidney. The authors report one case of renoduodenal fistula, discovered peroperatively in 41 years old man who underwent a subcapsular nephrectomy for right pyonephrosis upon pelvic lithiasis. Through a review of literature, the authors discuss diagnostic aspects of this complication.