Overview Contrast-enhanced Ultrasound for Complex Kidney Lesion Diagnosis in Patients With CKD Extension Status: Completed Trial end date: 2021-03-19 Target enrollment: Participant gender: Summary The purpose of this research study is to evaluate contrast-enhanced ultrasound for kidney malignancies. Phase: Phase 2 Details Lead Sponsor: University of North Carolina, Chapel HillCollaborator: Lantheus Medical Imaging