Which of the following is an absolute indication for surgery in cases of benign prostatic hyperplasia?
Nocturnal frequency
Bilateral hydroureteronephrosis
Recurrent urinary tract infection
Voiding bladder pressures > 50 cm of water
Bilateral hydroureteronephrosis is an absolute indication for surgery in cases of benign prostatic hyperplasia. Ref: Bailey and Love's Sho Practice of Surgery, 24th Edition, Page 1376.