Unusual case of bladder stone with an embedded scalpel blade

ME is an 84-year old man who presented with a 3-year history of storage urinary symptoms associated with strangury. He had an open radical prostatectomy and direct visual internal urethrotomy 10 years prior to presentation for early prostate cancer and partial urethral stricture, respectively. A plain abdominal X-ray revealed a bladder stone in which there was an opaque foreign body embedded within the stone. A cystolithotomy was done, and the retrieved stone was cracked open, revealing a surgical blade.The patient had an uneventful recovery postoperatively.