Urinary Retention after Prostate Radiation

In the cancer center where I had my SBRT, I was told that they also use the MR Linac for prostate patients who aren't able to have the gold seed fiducial markers implanted on them. These patients will therefore receive MRI&guided radiotherapy. As I had gold seeds implanted, I received MRI-guided radio planning with a mini-CT scan before each treatment. With the wider margin in the older Elekta, plus I didn't have SpaceOAR, I might have had some damage in my rectum. I noticed some mucus & blood in my week-3 post SBRT, that cleared on week-4. Somebody indicated to me that the mucus meant the radiated healthy cells were self-repairing, the veins were still sensitive hence the little blood on the stool as it moved out. I hope this is true. Other than this, I don't know if MRI Linac + SpaceOAR would have prevented the bleeding on week-3. I'm now on week-8 post-SBRT.
How was your (and others) experience sans MRI-guided radiotherapy?

Funny you should say that. I just had a conversation with my RO about that subject at Orlando Cancer Center. She said that if everybody wanted the Mridian, they would not be able to accommodate them. They also have the Varian Edge and a Proton machine. They are getting the Elekta Unity in about a year.

Also, when I did a telehealth with the Moffitt Cancer center, the RO stated that if I wanted to use the dynamic mapping capability of the Mridian that I should go someplace else, so I did. Although there is way more to that story, part of his reasoning was that other types of cancer treatments involve more movement than the prostate.

Thank you for your post.

My husband is self catheterizing himself right now when needed.
The Urologist is ordering a Urodynamic testing and CT scan to see why his bladder may not be fully emptying. They may be some bladder obstruction or urethra damage after radiation.

Hoping to get some type of answer to this problem.

Hello, @ddewitt, and welcome. I'm adding your post to the prostate cancer support group, where you might find others who have had a similar experience after radiation therapy.

Here's a little more information about urinary retention after cancer treatment and what treatments are available. https://www.cancer.org/cancer/managing-cancer/side-effects/stool-or-urine-changes/urine-retention.html

It's certainly frustrating to not have any actionable answers for your husband. Has his doctor identified the source of the urine retention?

@klp
I became aware that right after 28 radiation treatments for prostate cancer, I began retaining fluid mostly visible in my legs and feet.
Most primary doctors prescribed diuretic pills.
I don't understand the process of having to take fluids in to flush fluids out. Can you explain it in terms regular people can understand?