Sandbox: DDx Kidney mass

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  • Incidental finding , 50 yo male
  • Asymptomatic
  • May have hematuria and flank pain if ruptured
  • Often unremarkable
  • Variable shaped mass on U/S
  • Thick irregular walls
  • May contain soft tissues
  • Absent posterior acoustic enhancement
  • Vascularizations or septation present









Nonmalignant causes

acquired cystic kidney disease  cystic renal dysplasia glomerulocystic kidney  mesothelial cysts nephronophthisis