Which of the following is an absolute indication for surgery in cases of benign prostatic hyperplasia?: (A) Nocturnal frequency, (B) Bilateral hydroureteronephrosis, (C) Recurrent urinary tract infection, (D) Voiding bladder pressures > 50 cm of water
Answer is B. 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.