Objective: To evaluate the outcome of repeated electroejaculation for obtaining semen from adolescents and young men before initiation of anticancer therapies. Design: Retrospective clinical study. Setting: Bikur Cholim Hospital, Jerusalem, Israel. Patient(s): Six young male patients (average age, 18 +/-3 years) with diagnosed cancer who underwent 12 procedures of electroejaculation before chemotherapy. Intervention(s): Transrectal electroejaculation. Semen was cryopreserved in small aliquots. Main Outcome Measure(s): Semen analysis. Result(s): In all patients, semen was obtained by electrojaculation. Sperm count and motility were relatively low; mean values were 16 X 10(6)(range, 0-45 x 10(6)) and 14% (range, 0-53%) respectively. Conclusion(s): If necessary, electroejaculation can be performed in adolescents, and sperm may be obtained by repeated treatments over a short period. (Ferlil Steril (R) 2001;75:811-3. (C) 2001 by American Society for Reproductive Medicine.).