The TURP statistics I cited emanate from two sources.  The first is
from a free booklet entitled "Treating Your Enlarded Prostate,"
published and distributed by the U.S. Department of Health and Human
Services, AHCPR Publication No. 94-0584.  On pages 20-21 it lists
"Chance of experiencing inability to get an erection (impotence) as a
result of treatment: 3% to 35%; Chance of uncontrollable urinary
leakage as a result of treatment: .7% to 1.4%; Chance of dying within
three months after treatment: .5% to 3.3%."

Another source is "The Prostate Report," by Phillips Publishing, Inc.,
Potomac, Maryland, which quotes data attributed to Dr. John Wennberg
of the Dartmouth Medical School as follows:  "the death rate is as
high as 1.3% (one death per 56 procedures; 8% of the men having the
procedure have complications requiring hopitalization within three
months, and 5% of them develop impotence.  Also, 20% of all men need
to repeat the procedure within eight years.  Other reports show that
for 15% of TURP patients symptoms can return in about a year and 4% of
the patients suffer from incontinence."

These data have been around for some time as has the TURP.  The
numbers vary slightly depending on whose data you examine, but the
amount of variation is minor.

It appears that most urologists do not volunteer this information to
prospective surgery candidates.