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Evaluation of Sonographically Guided Percutaneous Core Biopsy of Renal Masses

Elaine M. Caoili1, Ronald O. Bude, Ellen J. Higgins, Donna L. Hoff and Hanh V. Nghiem

1 All authors: Department of Radiology, University of Michigan Medical Center, 1500 E. Medical Center Dr., Taubman Center 2910R, Ann Arbor, MI 48109-9723.



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  		Fig. 1A. —71-year-old woman with renal cell carcinoma. Biopsy was performed for tissue diagnosis before hospice care placement. Contrast-enhanced CT scan shows complex right renal mass with large necrotic component.

 


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  		Fig. 1B. —71-year-old woman with renal cell carcinoma. Biopsy was performed for tissue diagnosis before hospice care placement. Transverse sonogram shows both solid (arrows) and necrotic components of mass.

 


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  		Fig. 1C. —71-year-old woman with renal cell carcinoma. Biopsy was performed for tissue diagnosis before hospice care placement. Transverse sonogram shows 15-cm, 18-gauge needle (arrows) sampling solid portion of mass.

 


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  		Fig. 2A. —42-year-old woman with angiomyolipoma of right kidney. Biopsy was performed to exclude renal cell carcinoma. Contrast-enhanced CT scan shows atypical CT appearance of angiomyolipoma.

 


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  		Fig. 2B. —42-year-old woman with angiomyolipoma of right kidney. Biopsy was performed to exclude renal cell carcinoma. Longitudinal sonogram of right kidney shows homogenous hyperechoic mass (arrow) in upper pole.

 


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  		Fig. 2C. —42-year-old woman with angiomyolipoma of right kidney. Biopsy was performed to exclude renal cell carcinoma. Transverse sonogram shows path of biopsy needle (arrows), which is sampling mass.

 


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  		Fig. 3A. —47-year-old man with necrotizing pyelonephritis after liver transplantation. Biopsy was performed to exclude lymphoma. Unenhanced CT scan shows infiltrating mass in left kidney.

 


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  		Fig. 3B. —47-year-old man with necrotizing pyelonephritis after liver transplantation. Biopsy was performed to exclude lymphoma. Sonogram of left kidney shows several small hypoechoic masses consistent with abscesses.

 


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  		Fig. 3C. —47-year-old man with necrotizing pyelonephritis after liver transplantation. Biopsy was performed to exclude lymphoma. Sonogram shows path of biopsy needle (arrow) avoiding hypoechoic masses.

 

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