Conversation: The conversation between human and AI assistant.
[|Human|] I had bladder cancer in 2000. Treated as outpatient. No chemo. I noticed blood in my urine yesterday morning. Saw my internist at 11:45 AM. Gave me a referral to see a urologist, next Thursday. At 2 pm, same day, I checked my urine, which was clear of any blood . Subequent urine samples show no traces of any blood. I am 88 years old and ride the stationary bicycle for 30 minutes daily. I also had ba ck surgery for spinal stenosis about two years ago. What is the probable cause of the blood and should I still see the urologist and undergo a cat scan and other tests.
[|AI|]  Thanks for your question on Chat Doctor. Yes you should definitely consult urologist and get done PET scan. Since you are patient of bladder cancer, there is high possibility of recurrence of bladder malignancy. Blood in urine is the most common and earliest symptom of bladder cancer. So you may have recurrence. You would first get done urine microscopy and ultrasound examination of abdomen. And PET Scan is needed to rule out distal metastases. So consult urologist and discuss all these.