Hamilton-Baillie A. et al., 2022: Case of the Month' from Oxford University Hospitals, Oxford, UK: ketamine uropathy with metallic stents and obstructing calculus.

In this case report it is not possible to know why SWL failed. Details of the SWL procedure are not given but the location of the stone might indicate interference between the shockwave path and the skeleton. Moreover, subsequent URS showed an impacted stone in oedematous mucosa in the ureter. More interesting from a general urological perspective is information on the uropathology of ketamine abuse. I must confess that this was unknown to me. Also, for other readers it might be good to know that ketamine abuse can result in inflamed ulcerated bladder mucosa, ureteral inflammation, and ureteral strictures. Hans-Göran Tiselius