Objective:

To investigate the color Doppler ultrasound and contrast-enhanced ultrasound findings of renal giant angiomyolipoma (AML) for improving the diagnostic accuracy of renal giant AML

and providing reliable basis for clinical diagnosis and treatment.

Methods:

A total of 23 cases of renal giant AML confirmed by pathology were analyzed

including relation to renal location

shape

size

boundary

internal echo and contrast agent perfusion mode.

Results:

There were 25 masses in 23 patients with giant AML of the kidney

inc

luding 10 cases in the right kidney and 13 cases in the left kidney (including 2 masses in 2 cases). Twenty masses were hyperechoic

15 of them were homogeneous hyperechoic

5 were heterogeneous

multiple patchy hyperechoic with irregular hypoechoic; 3 were heterogeneous mixed echo (2 masses had hemorrhage and necrosis

1 mass ruptured to perirenal hematoma); 2 were hypoechoic. 8 cases were examined by contrast-enhanced ultrasound

including 3 cases of fast in slow out enhancement mode

5 cases of slow in slow out enhancement mode.

Conclusion:

Color Doppler ultrasound has a high diagnostic value for renal giant AML. Contrast-enhanced ultrasound can show the blood supply of the tumor and the mode of contrast agent enhancement

especially for ruptured and bleeding masses.