Table 2.

Summary of key findings of elastography studies.

Study (Year)	Study Type	Type of Renal Mass	Number of Patients (Tumors)	Imaging Type	Key Findings
Onur et al. (2015)	Prospective cohort study	Solid renal masses	71 (71)	Strain elastography	Mean strain index values were significantly higher in malignant compared with benign solid renal masses. (Semi-)quantitative analyses of strain elastography may aid in the differentiation of benign and malignant solid renal masses.
Guo et al. (2014)	Retrospective cohort study	Solid renal masses	42 (42)	ARFI	ARFI elastography has a potential value for the differentiation of clear cell RCC vs. pseudotumor or angiomyolipoma vs. pseudotumor but fails to distinguish clear cell RCC and angiomyolipoma.
Keskin et al. (2015)	Prospective cohort study	Renal masses with histopathology available	65 (65)	Strain elastography	(Semi-)quantitative analysis of strain elastography may help in the differentiation of RCC from angiomyolipoma.
Inci et al. (2016)	Prospective cohort study	Solid renal masses, suspicious for malignancy	99 (99)	Strain elastography	(Semi-)quantitative analysis of strain elastography could be useful for the preoperative differentiation of RCC from TCC.
Thaiss et al. (2019)	Prospective cohort study	Small (<4 cm) CECT-indeterminate renal masses	123 (123)	ARFI	ARFI elastography could differentiate clear cell RCC from oncocytoma and chromophobe or papillary RCC.

Studies are listed in the order of mention in the article’s main text. ARFI—acoustic radiation force impulse elastography, RCC—renal cell carcinoma, TCC—transitional cell carcinoma, CECT—contrast-enhanced computed tomography.