The authors describe what appears to be the first case of transperitoneal marsupialization of a lymphocele following laparoscopic pelvic lymph node dissection. The 9.7 x 5.6 x 6-cm collection was opened, its edges were cauterized, and the internal membranes were resected with an operative time of 90 minutes and a blood loss of less than 30 mL. A multicenter trial may be useful to determine whether excision of a portion of the peritoneum or an inverted-V rather than a linear incision would decrease the incidence of lymphoceles after laparoscopic pelvic lymphadenectomy.