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Para-aortic and pelvic lymphadenectomy in locally advanced cervical cancer with pelvic lymph node metastasis
Wei Jiang1, Mei-Ling Zhong1, Su-Lan Wang2
1Department of Gynecological Oncology, Jiangxi Maternal and Child Health Care Hospital, Nanchang, Jiangxi, 330008, China.
Objective:
This study sought to explore the efficiency of para-aortic and pelvic lymphadenectomy in the treatment of locally advanced cervical cancer (LACC) with pelvic lymph node (PLN) metastasis.
Methods:
A total of 171 LACC patients with imaging-confirmed pelvic lymph node metastasis were included in this study. These patients were divided into two groups: the surgical staging group, comprising 58 patients who had received para-aortic and pelvic lymphadenectomy (surgical staging) along with concurrent chemoradiation therapy (CCRT), and the imaging staging group, comprising 113 patients who had received only CCRT. The two groups' progression-free survival (PFS), overall survival (OS) and treatment-related complications were compared.
Results:
The surgical staging group started radiotherapy 10.2 days (range 9-12 days) later than the imaging staging group. The overall incidence of lymphatic cysts was 9.30%. In the surgical staging group, para-aortic lymph node metastasis was identified in 34.48% (20/58) of patients, while pathology-negative PLN was observed in 12.07% (7/58). Over a median follow-up period of 52 months, no significant differences in PFS and OS rates were found between the two groups (p > 0.05). Subgroup analysis of patients with lymph node diameters of ≥ 1.5 cm revealed a five-year PFS rate of 75.0% and an OS rate of 80.0% in the surgical staging group, compared to 41.5% and 50.1% in the imaging staging group, respectively, showing statistically significant differences (p = 0.022, HR:0.34 [0.13, 0.90] and p = 0.038, HR: 0.34 [0.12,0.94], respectively for PFS and OS). Additionally, in patients with two or more metastatic lymph nodes, the five-year PFS and OS rates were 69.2% and 73.1% in the surgical staging group, versus 41.0% and 48.4% in the imaging staging group, with these differences also being statistically significant (p = 0.025, HR: 0.41[0.19,0.93] and p = 0.046, HR: 0.42[0.18,0.98], respectively).
Conclusion:
Performing surgical staging before CCRT is safe and delivers accurate lymph node details crucial for tailoring radiotherapy. This approach merits further investigation, particularly in women with pelvic lymph nodes measuring 1.5 cm or more in diameter or patients with two or more imaging-positive PLNs.
