Could light bloody water on the paper after urinating be bladder cancer?

Written by Wang Shuai
Urology
Updated on May 19, 2025
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Firstly, it is not possible to determine the presence of bladder cancer in this way. If, after urinating, there is blood-tinged fluid when wiping the urinary opening with tissue, this may be considered hematuria. There are many causes of hematuria, such as urinary tract infections, or swelling, congestion, and erosion at the urinary opening, as well as kidney stones, all of which can lead to blood in the urine.

Of course, tumors in the urinary system can also cause blood in the urine, but tumor-induced hematuria is often painless, and the color of the blood tends to be concentrated, making the urine appear red or like washed meat water. In such cases, it is important to promptly visit a hospital for routine urinalysis, ultrasonography, and even CT scans or cystoscopy to determine if it is bladder cancer.

Other Voices

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Written by Liu Liang
Oncology
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Does bladder cancer require the removal of the bladder?

Whether or not to remove the entire bladder in cases of bladder cancer depends on whether the tumor has invaded the base layer and whether there is distant metastasis. For non-muscle invasive bladder cancer, where the muscle layer is not invaded and there is no distant metastasis, typically found in stage 0 and stage 1 bladder cancer patients, there is no need for complete removal of the bladder. The standard treatment in such cases generally involves transurethral resection of the bladder tumor. If the tumor has invaded the base layer but there is no distant metastasis, termed muscle-invasive bladder cancer, patients in this category require radical cystectomy, which involves the removal of the entire bladder. If there is distant metastasis, termed metastatic bladder cancer, surgical treatment is not pursued; instead, palliative chemotherapy is the primary approach.

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Written by Zou De Bo
Urology
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Is a bladder tumor the same as bladder cancer?

Not all bladder tumors are bladder cancer, as we all know, all tumors can be benign or malignant. Of course, bladder tumors can also be benign or malignant. Only malignant bladder tumors are considered bladder cancer. If some bladder tumors are benign, they cannot be called bladder cancer. Therefore, no matter how a bladder tumor is diagnosed, whether it is benign or malignant, it should be treated as soon as possible.

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Written by Shen Jiang Chao
Radiology
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Can bladder cancer be detected by color ultrasound?

Bladder cancer can be detected by color ultrasound. Bladder cancer is one of the most common tumors in the urinary system, and its typical clinical manifestation is painless gross hematuria, often occurring in the bladder trigone area. Normally, the bladder appears as an echo-free spherical shadow on ultrasound. If one sees one or more papillary or cauliflower-like moderate echoes protruding into the cavity within the echo-free area, with a wide base of the tumor, varying tumor sizes, rough surfaces, and no movement with the change of body position, bladder cancer should be considered. Early bladder cancer is characterized by localized thickening of the bladder wall and disappearance of the normal structure of the bladder wall. On CDFI (Color Doppler Flow Imaging), blood flow signals can be observed at the base of the tumor.

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Written by Liu Liang
Oncology
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Is there a benign form of bladder cancer?

Tumors are divided into two main categories: benign tumors and malignant tumors. The malignant tumors that occur in epithelial tissues are called cancers, such as lung cancer, bladder cancer, and breast cancer. Therefore, bladder cancer is malignant; there are no benign bladder cancers. Cancer, in contrast to benign tumors, tends to metastasize to distant locations, grow rapidly, and can spread through blood, lymph nodes, and local invasion. Thus, it is termed as cancer and is malignant, which means there is no such thing as benign bladder cancer.

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Written by Liu Liang
Oncology
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What are the symptoms of bladder cancer?

Bladder cancer's most common symptom is a consistent presence of painless gross hematuria. Some patients also exhibit frequent urination, urgency, and pain during urination as initial signs of bladder irritation. In advanced local stages, palpable pelvic tumors can be detected in patients, with symptoms such as urinary retention, lower abdominal pain, and inability to urinate. In the late stages of bladder cancer, patients may experience weight loss, back and flank pain, and signs of renal failure among other clinical manifestations.