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How Well Do Kidney Stones Show In A Ct Scan Without Contrast
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
Yes: In fact, ct scanning without contrast is becoming the gold standard evaluation for kidney stones. Contrast material frequently obscures stones and makes their identification difficult. Stones as small as 1 mm can be detected with unenhanced ct technique. Radiolucent stones which cannot be seen well with plain x-ray technique do show up well with unenhanced ct scan. Read more
Would a CT scan without contrast for possible kidney stones also show if there were adrenal tumors? Dr said CT was normal.
Yes!: Yes- that is exactly how a ct for renal stones should be performed- with oral or IV contrast. Read more
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?
Small ones: Smaller than may be 5mm.Get a more detailed answer ›
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
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
Yes and no...: Non-contrast ct is superior to ultrasound for kidney stones. Some stones will be visible on ultrasound, but the majority will not. Ultrasound will show if you have hydronephrosis (swelling or distension of the kidney collecting system for urine) which can suggest a blockage that may be due to a kidney stone. Hope this helps! Read moreSee 1 more doctor answer
Hi dr! I want to ask. Is it possible that a kidney stones was seen in ultrasound but can't be seen in ct scan with contrast?
Yes, because: It had probably passed in the meantime. Small stones generally pass. Most important for you is to prevent recurrence of stones. Read more
Had CT scan w/o contrast of kidneys to check for kidney stones and it came back normal. Would tumors and cysts also have shown up on the CT scan I had?
Yes but: Kidney tumors and cysts will show on a non-contast CT scan.However if there is a hyperdense cyst (due to hemorrhagic proteinaceous material in it) it cannot be distinguished from tumor without contrast. When contrast is given, a tumor will enhance (it will appear white)but a cyst will not enhance. I don't think you need to worry about tumor at age 33.Extremely rare. I'm glad you had no stones. Read moreSee 2 more doctor answers
I was given metronidazole from urgent care. And got a ct scan yesterday that shows a kidney stone should I still take metronidazole?
Could the reason for the severe pain in left lower abdomen be a kidney stone? Would it show in CT scan as I had it done and nothing came out in c.T sca
May be...: Have the possible diverticulitis of colon been ever considered? To get more meaningful evaluation, it's good idea to collect the feature, degree, and progress of specific symptoms over time with their sequence of events, and bring them to see doctor for review, analysis, more history, physicals, and possible tests as need so to deduce what is happening to you and how to treat you sensibly. Best.. Read moreSee 1 more doctor answer
I have 2 kidney stones in my right kidney. My urine has bubbles in it. I had CT scan, blood work up and urinalysis--all was good. Should I worry?
Could bladder cancer show up on CT scan done for kidney stones? Came back clear. Also had l-spine xray that was clear for any abnormalities.
Without contrast in CT scan is it possible to mix up tumors and kidney stones? I had no back pain but was told I had a large stone during a UTI at er.
Not usually: Kidney stones have a characteristic appearance of solid calcified masses in the central area of the kidney where urine collects. Tumors, while sometimes partially calcified, mostly occur in the outside part of the kidney called the cortex and have a prominent noncalcified soft tissue component. When in doubt contrast is used but the need for contrast to tell stones from tumors is uncommon. Read moreSee 1 more doctor answer
Lower left back pain that moves CT scan shows kidney stones but md says not relevant father and aunt died from renal cell ca help?
MRI: If your medical doctor does not feel it's coming from the kidney, can consider getting an mri. It will better show soft tissue pathology than the ct scan will and may reveal a disc or other problem in the lumbar spine. This is indicated if you have had the pain for a while and have not responded to conservative treatment. Read moreSee 2 more doctor answers
Blood in urine reoccuing UTI CT scan 3mm kidney stone bladder ultra sound scan shows bladder not emptying proper what could this be?
Cystitis.: Gross hematuria probably as a result of cystitis caused by the bladder outlet narrowing or stenosis and not because of the kidney stone. By drinking more water like 8 cups a day you can pass the kidney stone. For the cystitis you need urine culture. Until the culture result comes back you can be put on an antibiotic such as cipro (ciprofloxacin) to stop the gross hematuria. Read more
Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more
The kidneys are paired organs that lie on either side of the vertebral column. Part of their critical functions include the excretion of urine and removal of nitrogenous wastes products from the blood. They regulate acid-base, electrolyte, fluid balance and blood pressure. Through hormonal signals, the kidneys control the ...Read more
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