Introduction: Wünderlich syndrome (WS) refers to subcapsular, perirenal, or pararenal hemorrhage due to non-traumatic and iatrogenic conditions. Neoplasms, vascular disease, renal etiology, and anticoagulant use are underlying risk factors.
Case report: We describe a case of WS in a 79-year-old male who was undergoing hemodialysis, which resulted in hemorrhagic shock requiring multiple transfusions and embolization by interventional radiology.
Conclusion: Most commonly, patients present with flank pain; a computed tomography with contrast of the abdomen is essential for diagnosis. Surgical intervention is considered in hemodynamically unstable patients. Conservative therapy and intravenous resuscitations with blood products are considered a priority in hemodynamically stable patients.