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Urinary Imaging

E2193. Role of Contrast-Enhanced Ultrasound of Indeterminate Renal Lesions

Gulati M,  Aivazi A,  Romero M,  Duddalwar V. Keck School of Medicine of University of Southern California, Los Angeles, CA

Address correspondence to M. Gulati (

Background Information: The purpose of this exhibit is to present background on contrast-enhanced ultrasound (CEUS) of focal renal lesions with differentiating features and examples of cystic and solid renal lesions on both conventional ultrasound and CEUS. We offer a brief overview of CEUS-derived quantitative imaging of renal lesions.

Educational Goals/Teaching Points: We discuss CEUS technique in evaluation of focal renal lesions; advantages and limitations of renal CEUS; differentiating features of cystic renal lesions on CEUS, with examples and analogues to Bosniak CT classification; differentiating features of solid renal lesions on CEUS, with examples including clear cell renal cell carcinoma, papillary renal cell carcinoma, angiomyolipoma (both typical and lipid-poor), oncocytoma, renal pseudotumor, metastases, and lymphoma. We present and overview of quantitative imaging (time-intensity curves) derived from CEUS, and their use in differentiating renal lesions.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques: At the conclusion, participants will be familiar with technique, advantages, and limitations of CEUS in evaluation of cystic and solid renal lesions; and be familiar with the CEUS appearance of a variety of common cystic and solid renal lesions.

Conclusion: After reviewing this exhibit the participant will understand the emerging role of CEUS-derived quantitative imaging in differentiating renal lesions.