How does the risk of urinary obstruction differ between HDR and LDR brachytherapy for prostate cancer?  

I think it is important to clarify and distinguish between urinary retention and urinary obstructive symptoms for this clinical scenario. In general, the likelihood of urinary retention requiring catheter placement after the brachytherapy procedure is less than 5% with either high-dose rate brachyth...

In general, the urinary obstruction rate after prostate brachytherapy should be very low, < 1% with HDR.  A good brachytherapist will get good outcomes because brachytherapy is very very operator dependent and much much less modality dependent.  However, I do think HDR has an advantage ...