Bleeding into renal cysts is a well known and common complication of polycystic kidney disease, but occasionally the cysts can rupture externally, as in this case, into the retroperitoneal spaces.
CT and MR imaging of cystic renal lesions, Insights into Imaging
Complications of Sporadic, Hereditary, and Acquired Renal Cysts: Cross-Sectional Imaging Findings - ScienceDirect
Computed tomography scan of the abdomen and pelvis showing hyperdense
CT and MR imaging of cystic renal lesions, Insights into Imaging
Retroperitoneal hemorrhage, Radiology Reference Article
PDF) Spontaneous Rupture of Multiple Renal Cysts with Massive Retroperitoneal Hematoma
PDF) Large Retroperitoneal Haemorrhage Following Cyst Rupture in a Patient with Autosomal Dominant Polycystic Kidney Disease
Autosomal Dominant Polycystic Kidney Disease (ADPKD) - Genitourinary Disorders - Merck Manuals Professional Edition
Perioperative characteristics, histologic diagnosis, complications, and outcomes of dogs undergoing percutaneous drainage, sclerotherapy or surgical management of intrarenal cystic lesions: 18 dogs (2004ā2021), BMC Veterinary Research
Abdomen (Section 8) - Emergency Radiology COFFEE Case Book
Autosomal dominant polycystic kidney disease, Radiology Reference Article
Complications of polycystic kidney disease Polycystic Kidney Disease: from Bench to Bedside
Hemorrhagic Renal Cyst - JETem