Fig. 2From: Differential diagnosis and prognosis of small renal masses: association with collateral vessels detected using contrast-enhanced computed tomographyRepresentative images showing the appearance of CVs on CECT. We defined CVs as blood vessels of any diameter, with a definite connection between the tumor and the perirenal region. The yellow arrows indicate the CVs. CV, collateral vessel; CECT, contrast-enhanced computed tomographyBack to article page