What are my chances of successfully passing my stone?- A KidneyStoners.org Infographic

We frequently receive questions from patients trying to pass a stone who want to know whether they will be able to pass it successfully.  There are three main factors that your doctor uses to predict your chances of successful stone passage. These include stone size, stone location, and what length of time you have been trying to pass the stone. We go over each factor in the infographic below.


Coll, Varanelli and Smith, “Relationship of Spontaneous Passage of Ureteral Calculi to Stone Size and Location as Revealed by Unenhanced Helical CT”. American Journal of Roentgenology, 2002.

Miller and Kane, “Time to Stone Passage for Observed Ureteral Calculi: A Guide for Patient Education”. Journal of Urology, 1999.

About Dr. Mike Nguyen

Mike M Nguyen, MD, MPH, is a urologist and an Associate Professor of Clinical Urology at the Keck School of Medicine of USC in Los Angeles, CA. He specializes in the treatment of kidney stones with both surgery and dietary prevention and the in the treatment of kidney and prostate cancer using the latest robotic surgical approaches. He sees patients at clinics located in Los Angeles, Pasadena, and La Canada, CA. He is the founder of the www.KidneyStoners.org website.
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82 Responses to What are my chances of successfully passing my stone?- A KidneyStoners.org Infographic

  1. Christine Alfred says:

    Hi ..i have been diagnosed with Left ureter shows a calculus measuring 7 x 4 x 4 mm in its dimensions of density 640 HU in its lower third just 2 cm away from the vesicoureteric junction and exerting mild back pressure changes upon the ureter and renal pelvis.i like to know what are the chances of passing it without any operation interference and how long it is supposed to take..thanks

  2. Sharada says:

    I have 5 stones. 2 in right n 3 in left kidney and I m diabetic patient . I m worry to do lithriopy becace it may damage the kidney too. So what is the best opstion for me?

  3. Aneesh says:

    I have 2cm and 7mm stone in my right side kidney,i want to know whether it will go through urine by drinking lot of water

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