Study objective: To evaluate the effectiveness of using vascular clips to seal targeted lymphatics in gynecological malignancies for the prevention of postoperative pelvic lymphocele and symptomatic lymphocele after laparoscopic pelvic lymphadenectomy. Design: Retrospective analysis. Setting: Single-center academic hospital. Patients: In total, 217 patients with gynecological malignancies were included. Interventions: Patients were classified into two groups: group 1 (vascular clips were used to seal the targeted lymphatics) and group 2 (electrothermal instruments were used to seal the targeted lymphatics). The patients were followed up 4-6 weeks after surgery to evaluate the incidence of lymphoceles by ultrasound or CT. Symptomatic lymphoceles are defined as those that cause infection, deep vein thrombosis with or without swelling of the extremities, edema (swelling) of the extremities or perineum, hydronephrosis, and/or moderate to severe pain. Measurements and main results: One hundred and thirteen patients were enrolled in group 1, and 104 patients were enrolled in group 2. Lymphoceles were observed in 46 (21.2%) patients. Fewer lymphoceles occurred in group 1 than in group 2 (8 [7.1%] vs. 38 [36.5%], p <.001). The percentage of significantly sized lymphoceles was lower in group 1 than that in group 2 (4 [3.5%] vs. 30 [28.8%], p <.001]. Symptomatic lymphoceles occurred in 18 patients (8.3%), and only one (1.0%) occurred in group 1, while 17 (16.3%) occurred in group 2 (p <.001). A multivariate analysis revealed that vascular clips were the only independent factor for preventing lymphocele (OR = 7.65, 95% CI = [3.30-17.13], p <.001) and symptomatic lymphocele (OR = 22.03, 95% CI = [2.84-170.63], p = .003). Conclusion: The results indicate that the use of vascular clips may be useful for the prevention of the development of lymphocele and symptomatic lymphocele secondary to pelvic lymphadenectomy performed via laparoscopy.
