A 24 year old male with a history of intravenous drug abuse…
A 24 year old male with a history of intravenous drug abuse is referred to the sonography department with a history of left flank pain, fever and chills. You perform a renal sonogram and demonstrate a complex mass containing low-level echoes and debris. It also contains hyperechoic foci associated with ring-down artifacts. What is the most likely explanation for these findings?