[Massive incrustation of a plastic urethral prosthesis after implantation for 5 months].

A male aged 73 years in poor cardio-pulmonary condition and with urinary retention due to prostatic infravesical obstruction was treated with implantation of a new type of plastic urethral catheter. Prostatectomy was planned after improvement in the cardio-pulmonary condition. This period was prolonged and, five months after implantation of the urethral catheter, massive incrustation in the proximal intravesical part had formed. The catheter was found to be firmly embedded in the prostatic part of the urethra and cystotomy proved necessary to remove it.