Vesical calculus formation on non-absorbable sutures used for open inguinal hernia repair

•Foreign bodies in the urinary bladder always act as a nidus for formation of a calculus.•This was a rare case of bladder stones secondary to an iatrogenic injury to the bladder in the form of prolene stitches used to repair an inguinal hernia protruding into the bladder.•The patient most likely had a full bladder at the time of hernia repair or the bladder was part of the contents of the hernia sac.•This case illustrates the need to ensure that the bladder is empty prior to pelvic surgery and for surgeons to have a good understanding of inguinal anatomy to avoid injuring the contents of the hernia sac.

INTRODUCTIONIatrogenic injuries to the urogenital tract are rare, with the bladder being the organ most affected. We describe a case of a vesical calculus that formed on non-absorbable sutures that were used to repair an inguinal hernia.PRESENTATION OF CASEA 45-year-old male presented with frank haematuria and dysuria 2 years following an open left inguinal hernia repair. A CT urography showed a vesical calculus adherent to the left anterio-lateral wall of the bladder. Cystoscopy revealed that the calculus formed on non-absorbable sutures. Cystolapaxy was performed followed by cystoscopic excision of the sutures. The patient's post-operative course was uneventful.DISCUSSIONForeign bodies in the urinary bladder always act as a nidus for formation of a calculus. Iatrogenic bladder injuries are common during hernia repair. It is however rare for sutures used to repair an inguinal hernia to involve the urinary bladder wall. The patient most likely had a full bladder at the time of hernia repair or the bladder was part of the contents of the hernia sac.CONCLUSIONThis case illustrates the need to ensure that the bladder is empty prior to pelvic surgery and for surgeons to have a good understanding of inguinal anatomy to avoid injuring the contents of the hernia sac.