A series of benign prostatic hypertrophy patients were routinely evalu
ated, including transrectal echography, before and at regular interval
s following surgery. Five patients had persistent symptoms of dysuria
at 14-30 months after surgery. There was no infection, residual urine
or malignancy to explain their symptoms. The seminal vesicles (SVs) we
re severely dilated on transrectal echography, a finding which was def
initely not present on initial examination. The patients were treated
by transrectal echo-guided aspiration of the SVs by the perineal appro
ach. The fluid aspirated was examined, and antibiotics were directly i
njected into the SVs. In 4 of the patients, there was a dramatic relie
f of symptoms with prolonged improvement. In only 1 case, following tr
ansurethral resection, there was but slight improvement. Dilated, obst
ructed SVs after prostatectomy, clearly diagnosed on transrectal echog
raphy, may be the cause of persistent irritative urinary symptoms. Tre
atment can be instituted by echo-guided aspiration of the fluid with s
imultaneous injection of a potent antibiotic, resulting in probable im
mediate relief.