What is the role of renal bleeding in the pathogenesis of autosomal dominant polycystic kidney disease (ADPKD)?

Updated: Mar 24, 2020
  • Author: Roser Torra, MD, PhD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Renal cysts in ADPKD are associated with excessive angiogenesis evinced by fragile vessels stretched across their distended walls. When traumatized, these vessels may leak blood into the cyst, causing it to expand rapidly, resulting in excruciating pain. If bleeding continues, then the cyst may rupture into the collecting system, causing gross hematuria. Alternatively, the cyst may rupture into the subcapsular compartment and eventually dissect through the renal capsule to fill the retroperitoneal space.


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