Home›Oncology› Postoperative lymphocele affects 30% of gynecologic cancer patients after lymph node dissection
Postoperative lymphocele affects 30% of gynecologic cancer patients after lymph node dissection20 Risk Factors for Lymphocele After Gynecologic Cancer Surgery
Frontiers in MedicinePublished June 10, 2026DOI ↗Editorial oversight: Dr. Julia Lee, PhD · Oncology, Genomics & Drug Development
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Key Takeaway
Consider laparotomy, extensive node resection, and retroperitoneal closure as key modifiable risk factors for lymphocele.
This systematic review and meta-analysis assessed risk factors for postoperative lymphocele in patients with gynecological malignant tumors undergoing lymph node dissection. The analysis included 15739 patients and identified a pooled lymphocele incidence of 30.18%.
Multiple significant risk factors were identified. The strongest associations were for transvaginal drainage (OR 2.90, 95%CI 1.92-4.40), laparotomy (OR 2.76, 95%CI 2.12-3.58), resection of >20 lymph nodes (OR 2.75, 95%CI 2.16-3.51), concurrent chemoradiotherapy (OR 2.49, 95%CI 1.68-3.69), and monopolar electrosurgery (OR 2.48, 95%CI 1.75-3.51). Other factors included retroperitoneal closure (OR 2.44), pelvic and para-aortic lymphadenectomy (OR 1.86), deep myometrial invasion (OR 1.89), postoperative chemotherapy (OR 1.85), ovarian cancer (OR 1.69), omentectomy (OR 1.56), prolonged operation time >3h (OR 1.56), hypoalbuminemia (OR 1.58), lymph node positivity (OR 1.59), prolonged drainage >3d (OR 1.60), 24h drainage >100 ml (OR 1.61), BMI ≥24 kg/m² (OR 1.45), diabetes mellitus (OR 1.30), lymphovascular invasion (OR 1.25), age >50 years (OR 1.21), anemia (OR 1.20), and advanced FIGO stage (direction only).
The authors note moderate to high between-study heterogeneity for most outcomes and a predominance of single-center retrospective studies. These limitations warrant cautious interpretation. The findings may help identify patients at higher risk for lymphocele, but prospective studies are needed to confirm these associations.
A large analysis of 15739 women who had lymph node dissection for gynecologic cancers found that about 30% developed a lymphocele, a fluid collection that can cause pain or infection. The study identified 20 factors that raise the risk.
Some of the strongest risk factors include having open surgery (laparotomy), removing more than 20 lymph nodes, and using monopolar electrosurgery. Other factors include older age, higher BMI, diabetes, certain cancer types like ovarian cancer, and treatments like chemotherapy or radiation.
The analysis combined data from many studies, but most were single-center and retrospective, which means they can show links but not prove cause and effect. There was also moderate to high variation between studies for many factors.
For patients, this information can help doctors identify who may need closer monitoring after surgery. However, the findings should be discussed with a healthcare team, as individual risks vary and not all factors can be changed.
What this means for you:
Many factors raise lymphocele risk after gynecologic cancer surgery; discuss your personal risks with your doctor.
Study Details
Study typeMeta analysis
EvidenceLevel 1
PublishedJun 2026
View Original Abstract ↓
BackgroundPelvic lymphoceles are a common complication after lymph node dissection for gynecological malignancies, with severe cases leading to significant morbidity and delays in adjuvant therapy. This meta-analysis aims to identify risk factors for postoperative lymphoceles and provide evidence for clinical prevention and management.MethodsA systematic search was performed across eight databases (CNKI, Wanfang, VIP, CBM, Web of Science, PubMed, Cochrane Library, Embase) from inception to August 15, 2025, to include cohort and case-control studies. Two investigators independently screened studies and extracted data. Methodological quality was assessed using the Newcastle-Ottawa Scale, and statistical analyses were conducted with STATA 18.0. Meta-analysis employed fixed- or random-effects models, with heterogeneity evaluated by the I² statistic. The study was registered in PROSPERO (CRD420251053680).Results64 studies involving 15,739 patients were included. The pooled incidence of postoperative lymphocele was 30.18%. Moderate to high between-study heterogeneity was detected for most outcomes. Key significant risk factors were as follows: age >50 years (OR = 1.21, 95%CI: 1.02–1.42), BMI ≥24 kg/m² (OR = 1.45, 95%CI: 1.10–1.93), diabetes mellitus (OR = 1.30, 95%CI: 1.11–1.52), laparotomy (OR = 2.76, 95%CI: 2.12–3.58), resection of >20 lymph nodes (OR = 2.75, 95%CI: 2.16–3.51), pelvic and para-aortic lymphadenectomy (OR = 1.86, 95%CI: 1.42–2.43), omentectomy (OR = 1.56, 95%CI: 1.18-2.07), retroperitoneal closure (OR = 2.44, 95%CI: 1.67–3.57), monopolar electrosurgery (OR = 2.48, 95%CI: 1.75–3.51), prolonged operation time (>3h) (OR = 1.56, 95%CI: 1.10-2.21), 24h drainage >100 ml (OR = 1.61, 95%CI: 1.10-2.36), prolonged drainage (>3d) (OR = 1.60, 95%CI: 1.03-2.46), transvaginal drainage (OR = 2.90, 95%CI: 1.92–4.40), ovarian cancer (OR = 1.69, 95%CI: 1.21–2.36), lymphovascular invasion (OR = 1.25, 95%CI: 1.03–1.52), deep myometrial invasion (OR = 1.89, 95%CI: 1.25–2.87), lymph node positivity (OR = 1.59, 95%CI: 1.26–2.00), anemia (OR = 1.20, 95%CI: 1.02–1.40), hypoalbuminemia (OR = 1.58, 95%CI: 1.07–2.34), postoperative chemotherapy (OR = 1.85, 95%CI: 1.29–2.65), and concurrent chemoradiotherapy (OR = 2.49, 95%CI: 1.68–3.69). Advanced FIGO stage was also significant.ConclusionsClinicians can stratify lymphocele risk by integrating preoperative features, surgical procedures, tumor pathology, nutritional status, and adjuvant therapy to guide individualized management. Intraoperatively, rational planning, limited lymphadenectomy, retroperitoneal preservation, and standardized use of energy devices are recommended. Postoperatively, optimized drainage and correction of nutritional disorders reduce lymphocele risk. Given heterogeneity in some risk factors and predominance of single-center retrospective studies, well-designed prospective studies with unified criteria are needed to validate and refine prevention strategies.Systematic review registrationhttps://www.crd.york.ac.uk/prospero/, identifier PROSPERO (CRD420251053680).
