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A 39-year-old member asked:

Could cancer cause blood in the urine?

1 doctor answer1 doctor weighed in
Dr. Roscoe Nelson
Urology 29 years experience
Yes: It can be infection, stone, cancer or a variety of other problems. See your doctor. www.peedoc.com @thepeedoc.

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A member asked:

Other than cancer, what would cause microscopic blood in the urine?

6 doctor answers15 doctors weighed in
Dr. Kenneth Cheng
Family Medicine 32 years experience
Many possibilities : Blood in the urine can be caused by a cancerous tumor, a bladder polyp, an infection, interstitial cystitis, a kidney stone, and kidney disease. Additionally, blood can also be present on a urinanalysis from extra-urinary sources such as vaginal orrectal bleeding.
Dr. George Klauber
Specializes in Pediatric Urology
Also from hypercalcuria - excess calcium in urine. Crystals in kidney tubules can cause microscopic and sometimes gross blood in the urine
Feb 6, 2012
A 18-year-old member asked:

What kind of cancer can it be if you have blood in the urine?

2 doctor answers6 doctors weighed in
Dr. Shaym Puppala
Internal Medicine 26 years experience
Not necessarily CA: Blood in the urine (hematuria) has many possible causes, including kidney/bladder stones or kidney cysts, urinary tract infections, urethral trauma. Cancers commonly associated with hematuria include renal cell carcinoma (a kidney cancer), and bladder cancer. (see also dr. Klauber's very important comment.).
Dr. George Klauber
Specializes in Pediatric Urology
Glomerulonephritis is the most common cause of hematuria in children. This is a medical condition most commonly after a streptococcal , best treated by a nephrologist, and also occurs less commonly in adults.
Nov 28, 2011
Dr. Sahba Ferdowsi
General Practice 19 years experience
great answers doctors!
Feb 4, 2012
A 37-year-old member asked:

If I have bladder cancer, would there be blood in my urine?

2 doctor answers3 doctors weighed in
Dr. Moez Khorsandi
Urology 28 years experience
Yes: Bladder cancer may cause visible blood in the urine or microscopic blood in the urine which is only picked up by urine tests. Depending on the type of cancer, size, number of lesions, etc, blood may be visible to the naked eye but can also be absent with smaller lesions. Therefore, urine tests must be performed when bladder cancer is suspected.
A 77-year-old male asked:

Does blood in the urine always mean cancer?

2 doctor answers3 doctors weighed in
Dr. Silviu Pasniciuc
Internal Medicine 28 years experience
No, but cancer is one of the possibilities and needs to be ruled out. There are many other benign causes from kidney stones to prostate disease (in men) that can cause blood in urine.
A 32-year-old member asked:

What could cause blood in my urine?

1 doctor answer1 doctor weighed in
Dr. George Klauber
Specializes in Pediatric Urology
Bright red ?cystitis: If u have symptoms of burning on urination & frequency of urination. Bright red with no other symptoms could be a small vascular malformation (like vascular nevus) of kidney. Brown urine with proteinuria suggests kidney disease. Unusual for kidney or bladder tumor at your age. Microscopic hematuria could be caused by a kidney stone. Microscopic hematuria often benign. Needs work-up & ? Cystoscopy.
Last updated Aug 14, 2012

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