Ghosts in the renal pelvises: what are they?

J Nephrol. 2022 Apr;35(3):1041-1042. doi: 10.1007/s40620-021-01074-2. Epub 2021 May 31.
No abstract available

Keywords: Antimicrobial therapy; Emphysematous pyelitis; Renal ultrasound; Urinary tract infection.