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Reply to: non-contrast CT KUB still has a central role in the management of patients suspected of nephrolithiasis
  1. William Shyy1,
  2. Roneesha Knight2
  1. 1 Emergency Medicine, UCSF, San Francisco, California, USA
  2. 2 Emergency Medicine, Zuckerberg San Francisco General Hospital and Trauma Center, San Francisco, California, USA
  1. Correspondence to Dr William Shyy, Emergency Medicine, UCSF, San Francisco, CA 94143, USA; william.shyy{at}

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Dear editor

This letter provides excellent dialogue about how we can advance the care of patients with renal colic. Our responses to the comments are below.

It is correct that a CT KUB (kidney, ureter, bladder) has a higher sensitivity than US (ultrasound) and the ability to measure the size and exact location of an obstructing calculus. Given the adverse effects of a CT KUB (significant increased cost, length of stay, radiation and …

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  • Handling editor Ellen J Weber

  • Contributors WS and RK contributed equally in the writing of this invited submission from the editor.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

  • Patient consent for publication Not required.

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

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