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==Evaluation==<gallery>File:3mmstone.png|[[Transverse plane|Axial]] [[X-ray computed tomography|CT scan]] of abdomen without contrast, showing a 3-mm stone (marked by an arrow) in the left proximal [[ureter]]File:Ultrasonography of renal stone located at the pyeloureteric junction.jpg|[[Renal ultrasonograph]] of a stone located at the pyeloureteric junction with accompanying hydronephrosis.File:CT measurement of kidney stone in soft tissue and bone window.jpg|Measurement of a 5.6 mm large kidney stone in soft tissue versus skeletal [[CT_scan#Process|CT window]].</gallery> Objectives of the evaluation include:<ref>{{cite web|url=https://emedicine.medscape.com/article/381993-overview|title=Urinary Calculi Imaging|author=J Kevin Smith, Mark E Lockhart, Nicole W Berland and Philip J Kenney|website=Medscape|date=2015-10-27}}</ref>*Presence of stones within the urinary tract*Complications such as hydronephrosis (''See: [[Hydronephrosis]]'')*Estimate the likelihood of stone passage. Stones less than 5 mm (0.2 in) in diameter pass spontaneously in up to 98% of cases, while those measuring 5 to 10 mm (0.2 to 0.4 in) in diameter pass spontaneously in less than 53% of cases.<ref name=Gettman2005>{{cite journal|last=Gettman|first=MT|last2=Segura|first2=JW|title=Management of ureteric stones: Issues and controversies|journal=British Journal of Urology International|volume=95|issue=Supplement 2|pages=85–93|year=2005|pmid=15720341|doi=10.1111/j.1464-410X.2005.05206.x}}</ref>*Confirm any stone passage*Assess the stone burden ==Report==*Stone size(s) and location(s) along the urinary tract.*Hydronephrosis and its severity ==References=={{reflistBottom}}
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|author1=[[User:Mikael Häggström|Mikael Häggström]]
|author2=
'''Kidney stone disease''', also known as '''urolithiasis''', is when a calculus (kidney stone) occurs in the [[urinary tract]].<ref name=NIH2013>{{cite web|title=Kidney Stones in Adults|url=http://www.niddk.nih.gov/health-information/health-topics/urologic-disease/kidney-stones-in-adults/Pages/facts.aspx|accessdate=22 May 2015|date=February 2013|deadurl=no|archiveurl=https://web.archive.org/web/20150511192215/http://www.niddk.nih.gov/health-information/health-topics/urologic-disease/kidney-stones-in-adults/Pages/facts.aspx|archivedate=11 May 2015|df=dmy-all}}</ref>
==Planning=====Need for imaging=Acute disease - planning==Imaging is indicated in cases of flank pain and hematuria.<ref name="BrisbaneBailey2016">{{cite journal|last1=Brisbane|first1=Wayne|last2=Bailey|first2=Michael R.|last3=Sorensen|first3=Mathew D.|title=An overview of kidney Kidney stone imaging techniques|journal=Nature Reviews Urology|volume=13|issue=11|year=2016|pages=654–662|issn=1759disease -4812|doi=10.1038/nrurol.2016.154need and choice of modality}}</ref>
===Choice of exam=Recurrent==*See '''[[Ultrasonography of the urinary system]]''' is the first-line imaging modality for patients <14 years of age and those who are pregnant. It is also the first-line investigation for thin (BMI <30) patients and there is a strong suspicion of CT in recurrent kidney stone disease.<ref name="BrisbaneBailey2016"/>*'''[[Abdominal CT]]''' is recommended for older patients, as well as those who have higher BMI and/or less specific findings.<ref name="BrisbaneBailey2016"/>
