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Kidney CT Appearances

 

 


Angiomyolipoma (AML) CT Findings

  • May be difficult to differentiate from RCC when fat is minimal
  • AML has visible fat density with extent variable
  • Hypoattenuating area <-10 HU
  • May contain small intratumoral aneurysm
  • Thin CT sections needed for diagnosis of tumors with minimal fat

Angiomyolipoma (AML) CT Findings

Other Information About Angiomyolipoma

Etiology:

  • May be hereditary or sporadic
  • Lymphangioleiomyomatosis
  • Tuberous sclerosis

Epidemiology:

  • Female to male ratio is 4:1
  • Can occur at any age

Presentation:

  • Mostly asymptomatic
  • Palpable mass when large
  • Anemia
  • Flank pain
  • Hematuria
  • UTI

Prognosis:

  • Mostly benign
  • Renal AMLs causing symptoms may require treatment or surgery
  • Over 5cm can spontaneously bleed

Related Pearls: Renal Angiomyolipoma

Related Lectures:
MDCT/CTA Evaluation of the Suspected Renal Mass: Key Differential Clues - Part 1
MDCT/CTA Evaluation of the Suspected Renal Mass: Key Differential Diagnosis Points - Part 1

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