Patient: The results of ultrasound in the hospital for back pain showed that both kidneys were normal in shape and size, with clear borders and still clear and undilated structures. The right kidney showed strong echogenicity of about 6*5mm in the upper pole of the cortex, with clear borders and uneven internal echogenicity, showing network-like changes. Both kidneys show strong echogenic clusters with posterior acoustic shadow, the left side is about 4*4mm the right side is about 6*5mm No treatment Can this examination report show whether the malformation is benign or malignant, and is it serious? Is there any effect of herbal medicine for stones? Hospital: The components of misshapen tumor are vascular fat and smooth muscle, which are benign tumors and appear as strong echogenicity on ultrasound. However, the accuracy of ultrasound is limited and it is only a screening tool. If you want to further clarify the diagnosis and make it clear in your mind, it is recommended to perform double kidney MRI scan + enhancement examination.