Cystic renal angiomyolipoma (CEUS)

Case contributed by Bálint Botz


Known stable cystic mass lesion in the left kidney, which is followed up with a "watchful waiting" approach at regular intervals due to lack of progression and already impaired renal function.

Patient Data

Age: 80 years
Gender: Female
  • On B-mode US a heterogenously hyperechogenic, ill-defined, partially cystic left renal mass can be discerned. 
  • The solid parts show avid enhancement post contrast (SonoVue), and show a somewhat increased enhancement compared to the normal renal cortex in the late phase. 
  • The lesion is stable compared to the one year earlier CEUS exam (not shown). 

Case Discussion

Findings altogether favor a cystic angiomyolipoma, which is a somewhat unusal presentation of an otherwise common renal lesion. The mass has been known for almost 15 years and has shown less than one centimeter growth since the initial exam. 

Also contributed by Dr. Péter István Farkas

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