Occasionally, the delicate nerves responsible for the control of ejaculation may be damaged during the RPLND surgery. This may result in retrograde ejaculation, where the sperm is ejaculated back into the bladder rather than forward and out the penis. Patients may notice a significant decline or complete absence of ejaculate fluid. Although this condition is not harmful to your health, it will adversely affect a mans ability to father a child by intercourse. Nevertheless, assisted reproduction techniques such as in-vitro fertilization can often be performed to achieve a successful pregnancy despite retrograde ejaculation. For more information please visit Mayo Clinic.