Renal oncocytoma CT: Difference between revisions

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On abdominal CT scan, renal oncocytoma is characterized by a large well demarcated [[tumor]].<ref name=radio> Renal oncocytoma.Dr Donna D'Souza et al. Radiopaedia.org 2015.http://radiopaedia.org/articles/renal-oncocytoma</ref>
On abdominal CT scan, renal oncocytoma is characterized by a large well demarcated [[tumor]].<ref name=radio> Renal oncocytoma.Dr Donna D'Souza et al. Radiopaedia.org 2015.http://radiopaedia.org/articles/renal-oncocytoma</ref>


'''Non contrast'''
'''Noncontrast CT Scan'''
* Homogenous attenuation: If tumor size is less than 3 cm  
* Homogenous attenuation: If tumor size is less than 3 cm  
* Heterogenous attenuation: If tumor size is more than 3 cm  
* Heterogenous attenuation: If tumor size is more than 3 cm  
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* [[Calcification]] may be present
* [[Calcification]] may be present


'''Post contrast'''
'''Contrast CT Scan'''
* Small tumors may enhance homogeneously, but usually enhancement is heterogenous and the mass is larger
* Small tumors may enhance homogeneously, but usually enhancement is heterogenous and the mass is larger
* Central stellate non-enhancing scar is seen in approximately a third of cases
* Central stellate non-enhancing scar is seen in approximately a third of cases

Revision as of 18:42, 29 October 2015

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shanshan Cen, M.D. [2]

Overview

Abdonimal CT scan is helpful in the diagnosis of renal oncocytoma.[1]

CT

On abdominal CT scan, renal oncocytoma is characterized by a large well demarcated tumor.[1]

Noncontrast CT Scan

  • Homogenous attenuation: If tumor size is less than 3 cm
  • Heterogenous attenuation: If tumor size is more than 3 cm
  • Perinephric fat-stranding may be present due to edema
  • Calcification may be present

Contrast CT Scan

  • Small tumors may enhance homogeneously, but usually enhancement is heterogenous and the mass is larger
  • Central stellate non-enhancing scar is seen in approximately a third of cases
  • Renal vein thrombosis may be present, but tumor thrombus is absent

References

  1. 1.0 1.1 Renal oncocytoma.Dr Donna D'Souza et al. Radiopaedia.org 2015.http://radiopaedia.org/articles/renal-oncocytoma

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