Seed Implant side-effects

A close friend of mine opted to have Radiation Seed Implants approximately a year and a half ago. Last year he began passing blood in his urine. The Doctor at that time indicated that it was not all that unusual and that it should diminish with time. However, it has steadily gotten worse. He now has to go to the ER weekly and have a catheter inserted to relieve the waste from the bladder. He is passing clots that the Doctor says are scabs from the scars resulting from the radiation therapy. The Doctor indicated that it is a healing process and that each time the scab scales off the affected region will become smaller. He is consuming massive amounts of water to hopefully accelerate the healing process. He is now 82 years of age.

Has anyone out there had a similar side-effect of the seed implant treatment?? If this has not been encountered as a side effect, can someone guide us to a reputable source for a second opinion.