### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Sir: I have been going to a urologist for about 7 months. He has informed that I had bladder cancer and was given treatments for same. It seems to have cleared up, however I need to follow up in 3 months. My main concern is that after all of this time I still cannot pass urine. without the use of a catheter. Yesterday 10 2 13 I had a study done and after same I was able to pass urine just fine. As the day moved along and into the evening I could not pass any urine. I went to the emergency room at the Harbor Hospital in Baltimore, MD. and seen the staff doctor. She said she was going to place a new catheter and when she did I was able to pass urine. I was informed by another doctor who works with my urologist that I have a blockage and this is what causing a weak Bladder. I don t understand that after 7 months they can t find the blockage? I seem to have trouble getting to talk with my doctor he seems that he s to busy to sit me down and give me details. YYYY@YYYY most respectfully gene harriman

### output:

Hi!welcome to Chat Doctor! For early stage or superficial bladder cancers, transurethral resection of the bladder tumor (TURBO), is the most common treatment. This surgery is done through an instrument passed up the urethra, The side effects of transurethral bladder surgery are generally mild and do not usually last long. Unfortunately, even with successful treatment, bladder cancer often recurs (comes back) in other parts of the bladder. If transurethral resection needs to be repeated many times, the bladder can become Weak, scarred and lose its capacity to hold much urine. This can be the reason in your case too. You must discuss with your treating urologist clearly. Hope this helps!