I have read a few posts where the prostate was too large to do a PVP.  If
the doctor is going in and opening a  channel for the urine to flow through
what does it matter?  Wouldn't everyone need approximately the same sized
channel?  Or, does the larger prostate press more on the urethera  and once
the channel is opened, it would then reclose and have to be enlarged again?

Also on an older post the one guy, havig a PVP, was told by his docotor that
he would need to sign a form allowing the docotor to use TURP, if needed.
On a recent visit to my urologist I was told that if there is tri-lobal
growth that goes into the bladder, the TURP is necessary because it's angle
of operation is much greater than the laser, thus allowing it to get into
place the laser cannot reach.