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Doctor insights on: Ct Renal Stone Protocol

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How long does a CT kidney stone protocol take?

How long does a CT kidney stone protocol take?

Seconds: Using a modern ct scanner the scan should take on the order of seconds to perform. However you may have to wait between scans to allow contrast to move through the body for instance from the bloodstream into the kidneys and then into the bladder. ...Read more

Dr. Krishna Kumar
1 Doctor shared a insight

Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! The image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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I'm 20 yrs old and had a CT scan for a kidney stone and they found a incidental 11 mm interpolar left renal cortical cyst should I be worrried?

I'm 20 yrs old and had a CT scan for a kidney stone and they found a incidental 11 mm interpolar left renal cortical cyst should I be worrried?

No,: This is a very common incidental finding. A small renal cyst will generally cause no symptoms and require no treatment. ...Read more

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I'm 20 yrs old and had a CT scan for a kidney stone and they found a incidental 11 mm interpolar left renal cortical cyst should I be worrried?

I'm 20 yrs old and had a CT scan for a kidney stone and they found a incidental 11 mm interpolar left renal cortical cyst should I be worrried?

Renal Cyst: Renal cysts are very common, often benign and asymptotic fluid filled structures of the kidney's. Sometimes they can contain blood and can be difficult to better characterize on imaging. If they are only thin walled structures usually need no further work up, if they have solid portions may need follow up. ...Read more

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I'm 20 years old and had a CT scan for kidney stone and it showed a incidental 11 mm interpolar left renal cortical cyst no pain should I be worried?

I'm 20 years old and had a CT scan for kidney stone and it showed a incidental 11 mm interpolar left renal cortical cyst no pain should I be worried?

Renal Cysts: Renal cysts are benign fluid filled thin wall structures on the kidney that are commonly discovered when looking for something else on an imaging study. Rarely do they cause symptoms and if simple cysts are usually of no concern. ...Read more

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I'm 20 years old and had a CT scan for a kidney stone at the hospital and they found a incidental 11 mm interpolar left renal cortical cyst should I be?

I'm 20 years old and had a CT scan for a kidney stone at the hospital and they found a incidental 11 mm interpolar left renal cortical cyst should I be?

This is a: Common incidental finding. The vast majority of renal cysts never cause any symptoms or problems, and require no treatment. ...Read more

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How do I know if I've passed a kidney stone without another CT scan?

How do I know if I've passed a kidney stone without another CT scan?

Capture it: Hopefully, you were screening your urine and caught the stone. If the scan showed a 3 mm stone and you captured a 3mm stone, that is good enough. You should be pain free and a check of your urine from your doctor should show that the blood has cleared. ...Read more

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If I already know I have a kidney stone is it necessary to have a CT scan?

If I already know I have a kidney stone is it necessary to have a CT scan?

Possibly: If you know you have a kidney stone, a ct scan is not necessary unless symptoms develop. If the person remians asymptomatic, periodic imaging with ultrasound or other x-rays are adequate. However, small stones may be missed on these studies and a ct scan may be required to locate the stone. ...Read more

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CT scan shows 4mm kidney stone on wall of my kidney. No sign of it passing soon w/o forcing fluids. Will it continue to grow if not passed?

CT scan shows 4mm kidney stone on wall of my kidney. No sign of it passing soon w/o forcing fluids. Will it continue to grow if not passed?

Kidney stone.: If left alone, it is likely to grow. Usually the largest size kidney stone that’ll pass without intervention is 5-6mm. ...Read more

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CT showed 4mm kidney stone 8 days ago. X-ray today showed nothing. I don't think it has passed, but not much pain. Should I get another CT?

CT showed 4mm kidney stone 8 days ago. X-ray today showed nothing. I don't think it has passed, but not much pain. Should I get another CT?

CT showing stone: CT scan images are far more precise than plain KUB xray. CT scan will pick up smaller images and will pick up non-calcium containing stones. KUB will reveal only calcium stones and size and position and angles matter for visibility. Getting another CT is not compelling. Drink 4-5 liters per day. Include lemon extract 5 tblspn ReaLemon per day. 4 mm will pass. ...Read more

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Will CT shows no kidney stone but still full?

Will CT shows no kidney stone but still full?

Ct scan: If by full you mean hydronephrosis, then the answer is yes. There are many other causes of hydronephrosis besides kidney stones. ...Read more

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I have a 3-4mm kidney stone that showed up on ct, would I feel it if it passes?

I have a 3-4mm kidney stone that showed up on ct, would I feel it if it passes?

Usually: Passing kidney stones is usually painful. However, in patients who have passed a lot of previous stones, the chances of passing may become easier and with less pain. Although there may be less pain, one would usually still know they are passing the stone. ...Read more

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On a CT scan is it easy to tell a 10mm kidney stone from a tumor. Could they be mistaken?

On a CT scan is it easy to tell a 10mm kidney stone from a tumor. Could they be mistaken?

Not usually: Bobcat: a kidney stone shows up on the ct scan as a bright white spot and the density is measured to insure that it is a calcium deposit/stone. A mass/tumor can have calcifications in it, but the mass would typically be seen and not just the calcium. It may also matter whether you ct was done with and without contrast injection to be sure the stone is not obstructing the urinary tract. ...Read more

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Pain in my rightside every day for past mnth Hosp gave me a CT &check for my appendix&kidney stone. Found nothing, still in pain help!?

Pain in my rightside every day for past mnth Hosp gave me a CT &check for my appendix&kidney stone. Found nothing, still in pain help!?

Muscle pain?: Despite of your normal CT you may still have a kidney stone which is smaller than the CT cuts (3 mm), so even if that is the case you will pass it without problem if you keep yourself hydrated with at least 2L of liquids daily. Also muscle spasm/strain can be cause of your problem, try massages, heating pads, stretch exercises. Another cause maybe related to your ovaries, get pelvic Ultrasound for that! ...Read more

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I had a CT scan done for a kidney stone. It says there appears to be interval thinning of left cortex at the poles. What does that mean?

I had a CT scan done for a kidney stone. It says there appears to be interval thinning of left cortex at the poles. What does that mean?

Renal scarring: The upper and lower poles of the kidney or more vulnerable to scarring secondary to reflux. This may have occurred earlier in life secondary to a febrile urinary track infection characteristic for pyelonephritis which during the healing process can lead to scarring. You cannot eliminate scarring once present but you can help to prevent further urinary tract infections specifically with fever. ...Read more

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Pain after passing a kidney stone? Went to er, had CT only one kidney stone showed present... Passed it this morning. No pain all day, now pain

Possible fragment: It is entirely possible that you passed a fragment only of two superimposed stones or a very small fragment was not previously seen. May need urology follow up. Also, nephrology can analyze your urine to prevent further ston formation. ...Read more

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After 2 wks, docs say kidney stone passed since ct scan showed up clear. 3 days later still having pain (not as excruciating but constant). Is normal?

See rmark: If the CT showed NO STONE the discomfort/pain may be resultant of stone passing, as it "scratches the lining of the ureter. Drink enough fluids. I advise you drink a glass of lemonade in AM and one glass in PM.
I don't know the nature of your stone, but lemonade which contains CITRIC ACID does help prevent future ones.......Best of luck young lady. JBR ...Read more

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My husband just had a us that showed one kidney stone and a shadow on his kidney. He has a ct scan scheduled for Monday. What could the shadow be. I a?

Shadows are caused: By calcifications/stones on ultrasound normally. Like a solar eclipse of sorts. The ultrasound waves bounce off the stone so the area below the stone appears to be in a shadowed area. ...Read more

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Is it possible to see kidney stone with MRI or CT scan?

Yes: Noncontrast ct is the most sensitive and specific noninvasive exam for finding kidney stones. Mri (more specifically mr urogram) may find them, as well, but it is less common to order this test. ...Read more

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How can a CT scan tell if you have a kidney stone or cancer or something else?

How can a CT scan tell if you have a kidney stone or cancer or something else?

It shows the kidney: The ct scan that is typically done to look for kidney stones is done without any intravenous contrast. Almost all stones show up easily on ct scan. Renal masses typically show on a non-contrasted ct but they may not be able to tell if it is a cancer or not. The ct also shows other organs in the abdomen and a mass or cancer may be visible on the study. ...Read more

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What is the work up for a kidney stone in the er? Do they do bloodwork as well as CT scanning?

H&P, urinalysis, CT: The work up would start with a complete history and physical. If there is high suspicion for a kidney stone, a urine sample would be obtained to check for blood, bacteria, etc. The final step may involve getting a CT scan to look for stones and to evaluate for urinary obstruction as a result of the stones. ...Read more

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I have back pain, had CT scan, they sure it was kidney stone but couldn't see it, no pain after but today I do?

Follow up: There are often residual changes in the urinary tract soon after a stone passes. However, they should normalize in a few days or weeks. If you still have back pain, that usually means there are other reasons, that you need to discuss with your doctor. ...Read more

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Went to the ER Friday night and they did a CT scan and said I am passing a kidney stone, how long is it usually before it passes?

Variable: Days or weeks.
Size, location are relevant to passing.
Some require intervention by lithotripsy, or surgery if nit passing with pain control and fluids.
Also need to try to determine type, cause and prevention!! ...Read more

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My CT scan shows oval shaped 10.9 mm vs 4.5 mm kidney stone in the upper ureter, with a good orientation. What chances of passing?

Unlikely: 11mm stone is very unlikely to pass on its own. Hopefully you are under the care of a urologist. Good luck. ...Read more

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Can I tell if kidney stone has transited from ureter to bladder by change in symptoms? CT scan shows a 4mm stone 1.5 CM from bladder.

Can I tell if kidney stone has transited from ureter to bladder by change in symptoms? CT scan shows a 4mm stone 1.5 CM from bladder.

See answer: The only true accurate means of determining whether a ureteral calculus has passed is to retrieve it by straining your urine. The chance of spontaneous passage of a 4mm stone ~50-60%. Onset of symptoms of urinary urgency, frequency, burning, voiding small volumes usually indicates the stone is at the UVJ (ureter meets bladder). The absence or disappearance of pain does not guarantee stone passage. ...Read more

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I have a CT scan with a 3mm kidney stone, unobstructive causing considerable pain for over 3 weeks and have not seen a urologist. What should I do?

I have a CT scan with a 3mm kidney stone, unobstructive causing considerable pain for over 3 weeks and have not seen a urologist. What should I do?

Stones: A few pertinent facts about kidney stones: 1. Stones 5mm or less have a 66 to 85% chance of spontaneous passage. 2. Non-obstructing calculi do not cause pain. 3. Stones can move in and out of obstructing positions. 4. A urologist can be helpful even if the stone is likely to pass spontaneously, by appropriately medicating pain and prescribing a medication that may help some stones to pass. ...Read more

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I have a passing kidney stone, CT showed it in the lower part of the ureter. Its large 4x10mm long. How do I know if it has passed into my bladder?

Colic: 4x10 mm is a pretty big stone. The ureter tapers as it approaches the uvj. Only nerve endings are "stretch fibers, so obstruction causes the pain ("colic"). Even if the pain eases/resolves, the only way to know if it "passes" is to strain all urine/save the stone. A stone sitting in your bladder will not cause pain. Best to use a fine mesh aquarium fish net. You should be taking tamsulosin. ...Read more

Kidney Stone (Definition)

Solutes precipitate and combine to form stones formed of calcium oxalate usually around a nidus of uric acid. Other solutes that form stones are ca and mg phosphates, cystine, and uric acid staghorn calculi form in the presence of chronic urinary tract infections. Stones can be painful, may require ...Read more