Blood in Urine: Kidney Stones and Cancer Concerns

Q: Blood in Urine: Kidney Stones and Cancer Concerns

Hello： The examination for hematuria is not just to identify one condition and then relax, as there may be other issues present. <br>Therefore, in addition to knowing about the left kidney stone, it is important to rule out other causes. <br>Whenever there is visibly bloody urine

Hematuria examination

I previously experienced hematuria with urine that appeared reddish-brown.
I went to the hospital where they performed an X-ray, urinalysis, blood tests, and an abdominal ultrasound.
However, since it was an evening clinic, they only reviewed the urinalysis results and asked me to go home.
I recall that the urinalysis showed hematuria with values around 3-5, and proteinuria of about 20 mg, and there might have been glucose in the urine as well.
During my second follow-up appointment a week later, the doctor confirmed that there was a 0.6 cm stone in my left kidney.
What confuses me is why the doctor requested a urine cytology test when it seems to be just a case of hematuria due to the stone.
This makes me anxious, as I am only 27 years old and now have concerns about cancer.
I would like to ask: 1.
Can a stone still in the kidney cause hematuria? (Although the pain is not significant, I occasionally feel lower back discomfort.) 2.
If I only have hematuria due to a stone, why do I need to undergo a cancer cell test? (This worries me; do I really have a risk of cancer?)

A Jun, 20~29 year old female. Ask Date: 2017/07/08

Dr. Du Shixi reply Urology

Hello: The examination for hematuria is not just to identify one condition and then relax, as there may be other issues present.
Therefore, in addition to knowing about the left kidney stone, it is important to rule out other causes.
Whenever there is visibly bloody urine, it is best to perform a urine cytology test, even if there may not be any problems.
Don't be too anxious; just remember to return for your follow-up appointment to review the report.
Wishing you good health, drink plenty of water, and limit your salt intake.

Reply Date: 2017/07/08

More Info

Understanding blood in urine, particularly in the context of kidney stones and potential cancer concerns, can be quite alarming, especially for someone as young as 27. Let's break down your questions and concerns systematically.

1. Can kidney stones cause blood in urine?
Yes, kidney stones can indeed cause blood in the urine, a condition known as hematuria. When stones move within the kidney or pass into the ureter, they can irritate or damage the lining of the urinary tract, leading to bleeding. This bleeding can manifest as blood in the urine, which may appear red, pink, or brown, depending on the amount of blood present. In some cases, the bleeding may not be accompanied by significant pain, especially if the stone is small or if it is not causing a blockage. However, it is important to note that the presence of blood in urine can have multiple causes, including urinary tract infections, trauma, or even tumors.

2. Why did the doctor recommend a urine cytology test?
The recommendation for a urine cytology test, which checks for cancerous cells in the urine, is a precautionary measure. While your symptoms may be attributed to kidney stones, the presence of blood in urine warrants a thorough investigation to rule out other serious conditions, including bladder or kidney cancer. It is not uncommon for physicians to take a comprehensive approach when evaluating hematuria, particularly if it is persistent or unexplained. This is especially true in younger patients, where the likelihood of cancer is lower but not impossible. The goal is to ensure that any potential issues are identified early, allowing for timely intervention if necessary.

3. Should you be worried about cancer?
While it is natural to feel anxious about the possibility of cancer, it is crucial to remember that the majority of hematuria cases are not due to cancer. In younger individuals, the risk of malignancy is significantly lower compared to older populations. However, your healthcare provider's recommendation for further testing is a responsible approach to ensure that all potential causes of your symptoms are considered. It is essential to follow through with the recommended tests and to maintain open communication with your healthcare provider about your concerns.

In summary, while kidney stones can cause blood in the urine, the presence of blood necessitates a thorough evaluation to rule out other potential causes, including cancer. The urine cytology test is a standard procedure to ensure that any serious conditions are not overlooked. It is advisable to stay proactive about your health, follow your doctor's recommendations, and discuss any concerns you have regarding the tests and their implications. Remember to stay hydrated, as adequate fluid intake can help manage kidney stones and reduce the risk of further complications. If you have persistent concerns or if your symptoms change, do not hesitate to seek further medical advice or a second opinion.

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