BMJ Case Reports 2017; doi:10.1136/bcr-2017-219374

Unusual cause of renal stone following robotic pyeloplasty

  1. Prem Nath Dogra
  1. Department of Urology, All India Institute of Medical Sciences, New Delhi, India
  1. Correspondence to Dr Prabhjot Singh, drprabhjotsingh{at}
  • Accepted 26 February 2017
  • Published 13 March 2017


Non-absorbable Hem-o-Lok clips are commonly used for vascular pedicle control or suture stabilisation during laparoscopic or robotic reconstructive procedures. As they are placed close to suture line and with tension, these clips have a propensity to migrate. We report a case of a 22-year-old man with history of bilateral robotic pyeloplasty presenting with left inferior calyceal stone. He underwent left mini percutaneous nephrolithotomy which revealed an encrusted migrated Hem-o-Lok clip that was used to close the mesenteric window formed during transmesocolic pyeloplasty. Thus, these clips should be used sparingly and only at places where other effective alternatives are unavailable.


  • Contributors SY planned manuscript, acquired data, interpreted data, drafted manuscript and approved manuscript. PS planned manuscript, designed the study, interpreted data drafted and corrected manuscript, and approved manuscript. BN designed the study, drafted, corrected manuscript and approved manuscript. PND operated case, planned manuscript, designed study, corrected and approved manuscript.

  • Competing interests None declared.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.

Register for free content

The full text of all Editor's Choice articles and summaries of every article are free without registration

The full text of Images in ... articles are free to registered users

Only fellows can access the full text of case reports (apart from Editor's Choice) - become a fellow today, or encourage your institution to, so that together we can grow and develop this resource

Don't forget to sign up for content alerts so you keep up to date with all the case reports as they are published, and let us know what you think by commenting on the Editor's blog

Navigate This Article