This ejaculatory dysfunction can be attributed, according to current theory of ejaculation, to the loss of bladder neck function after resection. However, many recent studies demonstrated that bladder neck closure may not have such important role in maintaining antegrade ejaculation. Recent techniques had been developed to preserve ejaculation including ejaculatory hood sparing technique, prostatic urethral lift and the Rezum System (convective water vapor energy). Ejaculatory hood was defined as paracollicular and supracollicular tissue present 1 cm proximal to the verumontanum. Hermabessiere et al. used dynamic transrectal ultrasound (TRUS) findings after TURP to demonstrate that the ejaculate is directly expelled into the infra-montanal urethra with a direct closure mechanism of the paracollicular and supracollicular tissue without previous ballooning of the prostatic urethra.