Without any physical discomfort, only when urinating, people find that the urine is bloody, many people think it is because they have eaten too much "hot food" recently and have "heat" in their body, and taking some traditional Chinese medicine can improve the hematuria. However, they do not realize that this may be a sign of great disaster. Painless hematuria is a dangerous signal of urinary system tumors, and it should be checked early with B-ultrasound, cystoscopy, etc. to find out the cause. Once malignant bladder cancer is delayed, not only is the bladder not saved, but life may also be at risk.

Inducing factors: contact with chemicals + smoking

Bladder cancer can occur at any age, but the incidence rate increases gradually after the age of 40, with urban areas higher than rural areas, and the incidence in males is 2 to 4 times higher than that in females. Experts say that the main cause of bladder tumor is contact with chemicals and smoking. Research has found that long-term exposure to diesel exhaust can induce bladder cancer, and contact with aromatic amines in chemical raw materials is closely related to bladder cancer. Workers in pesticide factories, pharmaceutical factories, and dyeing factories are high-risk groups for bladder cancer.

Heavy smokers have a higher concentration of carcinogens in their urine, which can increase the risk of bladder cancer by 2 to 4 times. The urine of smokers can stimulate the bladder, and the longer the urine retention time, the more dangerous it is.

For high-risk groups, it is recommended to have an annual urological ultrasound and urinalysis examination, which can show whether there are bladder masses and gross hematuria that cannot be seen. If ultrasound finds a tumor, further cystoscopy should be performed for diagnosis, during which part of the tumor tissue can be removed for pathological examination of its malignancy. CT examination can understand the depth of tumor invasion into the bladder wall, etc., which can guide the next treatment.

Remind: "Painless hematuria" is more可怕

A 21-year-old college student named Xiao Chen has always been healthy, but last month, for several days in a row, his urine looked a bit red, but he had no other discomfort. He went to the hospital for a visit, and an ultrasound examination found a tumor inside the bladder. After surgery, it was confirmed to be a "inverted papillary tumor", fortunately it is benign.

Experts say that the vast majority of bladder tumors are malignant bladder cancer, and benign tumors are very rare. However, whether benign or malignant, they can all manifest as painless,肉眼可见的血尿. Patients are likely to be complacent due to the lack of pain and other discomfort, resulting in the delay of bladder cancer diagnosis and treatment. He reminds that actually "painless hematuria" is more可怕, because it is a common symptom of bladder cancer, caused by bleeding from the rupture of tumor lesions’ blood vessels. If combined with infection, it can also be accompanied by frequent urination, urgency, and dysuria. Domestic surveys have found that the incidence of bladder cancer in patients with gross hematuria is 13% to 34.5%.

How to see hematuria?

It can be seen with the naked eye: during the day, the urine retention time is short, and the urine looks bright red; at night, the urine retention time is long, and the urine appears dark red; sometimes there may be blood clots in the urine. If the blood in the urine is in a long strip shape, it may be a ureteral tumor or a renal tumor.

The hematuria of bladder cancer is often intermittent, sometimes it can be alleviated or stopped spontaneously, and some patients may have blood in urine again only after 1 to 3 months after a single episode. Experts say: "Many patients think it is due to heat, inflammation, etc., and after taking traditional Chinese medicine, they find that the urine is no longer bloody, and they think that the traditional Chinese medicine is effective, so they do not go to the hospital, which delays the disease."