📃 Paper Title: The Natural History of Nonobstructing Asymptomatic Renal Stones Managed with Active Surveillance
🧍 Author: BM Dropkin
🕒 Year: 2015
📚 Journal: USA
🌎 Country: The Journal of Urology
ㅤContext to the study:
Can you tell me about a study that looked at outcomes of asymptomatic renal stones managed with active surveillance?
ㅤ✅ Take-home message of study:
Of included asymptomatic renal stones:
17% needed surgical intervention within 3 years
28% became symptomatic within 3 years
ㅤ Retrospective observational study
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Study participants:
Number included: 110 patients (160 stones)
Inclusion criteria:
Patients with asymptomatic renal stones presenting from 2008 to 2010
Initial selected management of active surveillance
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Key study outcomes:
Mean follow-up: 3 years (rounded down from 3.4 years)
Need for surgical intervention: 17%
Development of symptoms: 28%
In a multivariate model, the only variable independently associated with development of symptoms was stone location. Upper and mid-pole stones were more likely than lower pole stones to become symptomatic (40.6% vs. 24.3%).
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Study Limitations:
The adopted active surveillance protocol used in this study primarily made use of ultrasound imaging as the follow-up imaging modality of choice
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