What does the harm caused by bladder cancer usually have?
The main symptom of bladder cancer is painless gross hematuria. It can also cause symptoms such as poor urination, urinary retention or pain or upper urinary tract obstruction. The venous return of lower limbs can also be blocked, causing edema of lower limbs. At the same time, it may be accompanied by frequent urination, urgent urination and painful urination. If the tumor is relatively large, it can cause a mass in the lower abdomen.
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