Why prostate cancer patients have hematuria is seen in different situations.
Specifically, look at:
Early stage of prostate cancer
Since the tumor is confined to the gland, there is usually no abnormal manifestation.
As the tumor grows and progresses in size, it will manifest as lower urinary tract symptoms such as urinary frequency, urinary urgency, difficulty in urination, and generally no hematuria, which is similar to the symptoms exhibited by benign prostate hyperplasia.
At this time, if hematuria occurs, other causes should be considered, such as bladder stones due to difficulty in urination, tumors of ureteral bladder origin such as uroepithelial carcinoma, and long-term application of anticoagulant drugs in some patients with heart disease can also lead to hematuria.
Later stage of locally advanced prostate cancer
Tumor invasion of the urethra, bladder neck, seminal vesicles and other tissues, the erosion of the tumor tissue causes the surface blood vessels to rupture and bleed, leading to hematuria, which is also the main cause of hematuria in prostate patients, and a few patients can also develop hematospermia.
Hematuria due to tissue invasion of prostate cancer often indicates that the tumor is in an advanced stage, and this phenomenon can be clarified by imaging or cystoscopy in most cases, so a small percentage of prostate cancer patients will still have hematuria.