Sandbox: DDx Kidney mass: Difference between revisions

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* Detected prenatally
* Bilateral kidney involvement results in stillbirth
* Irregular, mobile, nontender, flank abdominal mass in infants
* Lobulated renal contour
* Multiple, noncommunicating cysts
* Cluster of cysts with variable sizes (1mm-2cm) and shapes 
* Dysplastic parenchyma
* Absence of a normal pelvocaliceal system
* Nests of metaplastic cartilage and undifferentiated epithelial ducts
* Extensive fibrous tissue stroma
* Thin-walled cysts cysts filled with yellow/clear fluid


* 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==
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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