Sandbox: DDx Kidney mass: Difference between revisions

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* Male patients on dialysis
* Asymptomatic
* May have hematuria with flank pain if ruptured
* No family history of cystic diseases
* Bilateral renal development of small fluid-filled cysts
* Kidneys are typically small in size
* Involve both the cortex and medulla
* Cystic hemorrhage and calcification
* Cysts surrounded by normal renal parenchyma  or interstitial fibrosis
* Surrounded by a single layer of cuboidal epithelial cells or multilayered epithelial lining
* Oxalate crystal deposition


* Fever, chills, night sweats, and abdominal pain
* Hematuria, pallor, and weight loss




* Costovertebral tenderness




* Elevated WBC count
* Elevated ESR and CRP


* Well defined hypoechoic area within the corticomedullary parenchyma on U/S
* Well defined mass of low attenuation with a thick, irregular wall or pseudocapsule on CT


* Not applicable


Angiosarcoma






==Nonmalignant causes==
==Nonmalignant causes==
acquired cystic kidney disease  cystic renal dysplasia glomerulocystic kidney  mesothelial cysts nephronophthisis 
anaplastic sarcoma clear cell sarcoma mesoblastic nephroma metanephric stromal tumor nephroblastomatosis / nephrogenic rests neuroblastoma oncocytoid carcinoma after neuroblastoma ossifying

Latest revision as of 20:52, 9 November 2015

  • Fever, chills, night sweats, and abdominal pain
  • Hematuria, pallor, and weight loss


  • Costovertebral tenderness


  • Elevated WBC count
  • Elevated ESR and CRP
  • Well defined hypoechoic area within the corticomedullary parenchyma on U/S
  • Well defined mass of low attenuation with a thick, irregular wall or pseudocapsule on CT
  • Not applicable

Angiosarcoma


Nonmalignant causes

anaplastic sarcoma clear cell sarcoma mesoblastic nephroma metanephric stromal tumor nephroblastomatosis / nephrogenic rests neuroblastoma oncocytoid carcinoma after neuroblastoma ossifying

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