Yes, a 7mm kidney stone can sometimes pass through urine naturally, but the chances are lower than with smaller stones. The likelihood depends on the stone’s location, shape, urinary obstruction, and individual anatomy.
In this blog, we will discuss the chances of natural passage, symptoms, treatment options, and when to consult a urologist.
What Is a 7mm Kidney Stone?
Kidney stones are solid substances made up of acids and mineral salts present in the urinary tract. The dimensions of a 7mm kidney stone are about 0.7cm, hence, a moderately sized stone.
The size of the kidney stone does not necessarily affect what will follow. The 7mm kidney stone can either be located in the kidneys, or it can be lodged within the ureter, the tube connecting the kidneys to the bladder.
What is very crucial here is the fact that the position of the kidney stone matters a lot.
Can a 7mm Kidney Stone Pass Through Urine?
Yes, 7mm kidney stones can sometimes pass through naturally, but it is not always certain. Larger stones are less likely to pass spontaneously than smaller stones. It will depend on the location of the stone as well as the specific anatomy of the urinary system of that particular individual.
The closer the stone is to the bladder, the greater the possibility of passing compared to those farther up in the ureter. There are times when doctors might suggest observing a patient for a certain period of time.
But this must be done under a doctor’s advice and not just leaving the stone alone.
Does the Location of a 7mm Stone Affect Its Passage?
Stone of 7mm Inside the Kidney
In some cases, a stone in the kidney may not necessarily cause any problem and will not need immediate intervention. Your urologist may opt for a wait-and-watch approach, especially if you do not have any obstruction or infection in your kidney.
Stone of 7mm in Upper Ureter
If the stone in the ureter is 7 mm in size and is placed in the upper part of the organ, then it would be difficult to pass through. If the stone blocks the passage of urine flow, then it will cause you trouble.
Stone of 7mm in Lower Ureter
If the size of the stone is 7mm and it is placed lower in the ureter, then it is likely to pass. In certain cases, a urologist may advise a watchful wait along with medication.
What Symptoms Can a 7mm Kidney Stone Cause?
The symptoms of a 7mm kidney stone may differ depending on the stone’s position and if it causes any obstruction in the urine flow. These symptoms may be:
Intense pain in the back or side
Pain radiating to the lower abdominal area or groin
Urine containing blood
Discomfort when passing urine
Increased frequency of urination
Nausea or vomiting
Problems while passing urine
If a person experiences fever or chills in addition to the mentioned symptoms, he or she should pay special attention to the problem. Such a situation may be very dangerous.
Can a 7mm Kidney Stone Pass Naturally Without Surgery?
The 7 mm ureter stones can go away without treatment, but the possibilities are less likely compared to the small-sized ones. The urologist might think about watching for certain criteria like if the patient is in a stable condition, and has minimal pain and no infections in addition to properly draining urine.
Pain medication or medicine in certain ureter stones will help in relaxing the ureter to facilitate stone removal. However, medications don’t normally dissolve kidney stones.
It is crucial to have follow-up procedures since an improvement in the symptoms is not always a sign that the stone has been passed.
How Long Does It Take for a 7mm Kidney Stone to Pass?
There is no fixed timeline for a 7mm stone. If it is going to pass naturally, it may take days or weeks, depending on its location and how easily it moves through the ureter.
Prolonged obstruction should not be ignored. Follow-up imaging may be recommended to confirm whether the stone has passed and whether the kidney is draining normally.
When Does a 7mm Kidney Stone Need Treatment?
Active treatment may be recommended when:
The stone has not passed or is not mobile during follow-up
There is pain that is unbearable or recurring
There is obstruction of urine flow
Swelling occurs in the kidneys
There is infection of the urine
Functioning of the kidney is affected
There is a solitary kidney
The position does not allow natural passage
Hence, this decision involves factors other than the size of the kidney stone alone.
Treatment Options for a 7mm Kidney Stone
Medications and Observation
As a treatment option, a doctor may advise pain management, proper hydration, medications that may aid in passing the stones from certain ureters and follow-up.
Ureteroscopy with Laser Lithotripsy
In ureteroscopy, a thin scope is inserted through the urinary tract in order to access the stone. A laser may be used to break down the stone into smaller fragments that may be passed through or removed.
It is mostly used when the stone is trapped in the ureter and cannot pass on its own.
Shockwave Lithotripsy
Shockwave lithotripsy (SWL/ESWL) breaks up the stone into smaller fragments using shock waves. The suitability of the treatment is determined by factors like location, size, and composition of the stone, among others.
RIRS
Retrograde intrarenal surgery involves the use of a flexible scope to access stones that are in the kidney. The stone can be fragmented using laser energy after which it will be either removed or passed in the urine.
PCNL
Percutaneous nephrolithotomy is often preferred for bigger stone loads. Just because of a 7mm stone does not necessarily mean that one needs PCNL.
How Is a 7mm Kidney Stone Evaluated?
Your urologist may recommend imaging such as an ultrasound or non-contrast CT scan to determine the stone’s exact size and location and check for obstruction or kidney swelling.
Urine and blood tests may also be advised, particularly when infection or changes in kidney function are suspected.
This information helps determine whether the stone can be monitored or whether active 7mm kidney stone treatment is more appropriate.
Conclusion
A 7mm kidney stone may pass naturally in some cases, but the chances depend on its location, shape, symptoms, and whether it is causing obstruction or infection. Stones located lower in the ureter may have a better chance of passing than those positioned higher up.
If the stone does not pass, or if it causes persistent pain, blockage, infection, or kidney swelling, treatment such as medication, ESWL, URS, or RIRS may be considered. For proper evaluation and treatment planning, you can consult Dr. Anuj Arora, Best Urologist in Greater Noida.
Frequently Asked Questions
Can a 7mm kidney stone be passed through the urine?
Yes, sometimes a 7mm kidney stone can be passed, but it depends on its place in the kidney, as well as whether it can be passed as easily as passing smaller stones.
Is a 7mm kidney stone a big stone?
It can be said that this stone is not small, but its size makes it more difficult to pass compared to smaller stones.
Can a 7mm kidney stone be passed by drinking a lot of water?
No, drinking a lot of water cannot assure the passage of a 7mm kidney stone, although adequate drinking is recommended to be healthy.
What is the best way to treat a 7mm kidney stone?
There is no universal method that will be applicable in all cases. The stone can be observed, treated with medication, or passed using ESWL, URS, or RIRS.
When should I visit a urologist for my 7mm kidney stone?
Visit your urologist if you have pain, blood in the urine, difficulty urinating, or other recurring symptoms related to your stone.
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