Abstract
Background
In cervical cancer, para-aortic lymph nodes are common sites of metastasis. The purpose of the study was to evaluate the clinical benefits of prophylactic irradiation as postoperative therapy.
Methods
A retrospective cohort study was conducted during 2001–2015 at a single institution. Patients with a high risk of para-aortic lymph nodes recurrence were eligible for this study, and we identified patients who had pelvic lymph node metastasis and underwent radical surgery and concurrent chemo-radiotherapy. As a result, 33 and 46 patients were included in the treatment (prophylactic irradiation) and non-treatment groups, respectively. Baseline differences between the two groups were adjusted with the inverse probability of treatment weighting using propensity scores composed of the independent variables including age, stage, tumor size, pathological findings, lymph node status, and pathological subtypes.
Results
In the 68-month median follow-up period (range 6–178 months), 25 patients experienced recurrence, and 17 patients were dead. After adjustment with the inverse probability of treatment weighting, the recurrence rates tended to decrease in the treatment group, but there was no significant difference between the two groups [treatment vs. non-treatment, 29.4% and 44.3%, respectively; hazard ratio, 0.593 (95% CI 0.320–1.099); P = 0.097]. However, adjusted para-aortic lymph nodes recurrence rates were not significantly different [treatment vs. non-treatment, 7.8% and 11.4%, respectively; odds ratio, 0.660 (95% CI 0.187–2.322); P = 0.558]. Moreover, Kaplan–Meier curves showing post-recurrence survival revealed no significant difference between the two groups (P = 0.141).
Conclusions
Prophylactic para-aortic lymph nodes irradiation did not reduce the risk of recurrence.
Similar content being viewed by others
References
Siegel RL, Miller KD, Jemal A (2016) Cancer statistics. CA Cancer J Clin 66(1):7–30
Benedet JL, Odicino F, Maisonneuve P et al (2003) Carcinoma of the cervix uteri. Int J Gynaecol Obstetrics 83(Suppl 1):41–78
Mabuchi S, Isohashi F, Yoshioka Y et al (2010) Prognostic factors for survival in patients with recurrent cervical cancer previously treated with radiotherapy. Int J Gynecol Cancer 20(5):834–840
Waggoner SE (2003) Cervical cancer. Lancet 361(9376):2217–2225
Morice P, Castaigne D, Pautier P et al (1999) Interest of pelvic and paraaortic lymphadenectomy in patients with stage IB and II cervical carcinoma. Gynecol Oncol 73(1):106–110
Cosin JA, Fowler JM, Chen MD et al (1998) Pretreatment surgical staging of patients with cervical carcinoma: the case for lymph node debulking. Cancer 82(11):2241–2248
Sakuragi N, Satoh C, Takeda N et al (1999) Incidence and distribution pattern of pelvic and paraaortic lymph node metastasis in patients with Stages IB, IIA, and IIB cervical carcinoma treated with radical hysterectomy. Cancer 85(7):1547–1554
Peters WA 3rd, Liu PY, Barrett RJ 2nd et al (2000) Concurrent chemotherapy and pelvic radiation therapy compared with pelvic radiation therapy alone as adjuvant therapy after radical surgery in high-risk early-stage cancer of the cervix. J Clin Oncol 18(8):1606–1613
Angioli R, Plotti F, Aloisi A et al (2015) A randomized controlled trial comparing four versus six courses of adjuvant platinum-based chemotherapy in locally advanced cervical cancer patients previously treated with neo-adjuvant chemotherapy plus radical surgery. Gynecol Oncol 139(3):433–438
Matsuo K, Shimada M, Saito T et al (2018) Risk stratification models for para-aortic lymph node metastasis and recurrence in stage IB-IIB cervical cancer. J Gynecol Oncol 29(1):e11
Gold MA, Tian C, Whitney CW et al (2008) Surgical versus radiographic determination of para-aortic lymph node metastases before chemoradiation for locally advanced cervical carcinoma: a Gynecologic Oncology Group Study. Cancer 112(9):1954–1963
Asiri MA, Tunio MA, Mohamed R et al (2014) Is extended-field concurrent chemoradiation an option for radiologic negative paraaortic lymph node, locally advanced cervical cancer? Cancer Manag Res 6:339–348
Haie C, Pejovic MH, Gerbaulet A et al (1988) Is prophylactic para-aortic irradiation worthwhile in the treatment of advanced cervical carcinoma? Results of a controlled clinical trial of the EORTC radiotherapy group. Radiother Oncol 11(2):101–112
Rotman M, Pajak TF, Choi K et al (1995) Prophylactic extended-field irradiation of para-aortic lymph nodes in stages IIB and bulky IB and IIA cervical carcinomas. Ten-year treatment results of RTOG 79-20. JAMA 274(5):387–393
Kim JH, Kim JY, Yoon MS et al (2016) Prophylactic irradiation of para-aortic lymph nodes for patients with locally advanced cervical cancers with and without high CA9 expression (KROG 07-01): a randomized, open-label, multicenter, phase 2 trial. Radiother Oncol 120(3):383–389
Rubin DB (2006) Using propensity scores to help design observational studies: application to the tobacco litigation. Matched Sampl Causal Effects 365–382
Austin PC, Stuart EA (2015) Moving towards best practice when using inverse probability of treatment weighting (IPTW) using the propensity score to estimate causal treatment effects in observational studies. Stat Med 34(28):3661–3679
Ureyen I, Aksoy U, Dundar B et al (2014) Does lymph node involvement affect the patterns of recurrence in stage IB cervical cancer? Turk J Med Sci 44(5):844–852
Sapienza LG, Gomes MJ, Calsavara VF et al (2017) Does para-aortic irradiation reduce the risk of distant metastasis in advanced cervical cancer? A systematic review and meta-analysis of randomized clinical trials. Gynecol Oncol 144(2):312–317
Beriwal S, Gan GN, Heron DE et al (2007) Early clinical outcome with concurrent chemotherapy and extended-field, intensity-modulated radiotherapy for cervical cancer. Int J Radiat Oncol Biol Phys 68(1):166–171
Grigsby PW, Heydon K, Mutch DG et al (2001) Long-term follow-up of RTOG 92 – 10: cervical cancer with positive para-aortic lymph nodes. Int J Radiat Oncol Biol Phys 51(4):982–987
Anglemyer A, Horvath HT, Bero L (2014) Healthcare outcomes assessed with observational study designs compared with those assessed in randomized trials. Cochrane Database Syst Rev 4:Mr000034
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
No author has any conflict of interest.
About this article
Cite this article
Yoshida, K., Kajiyama, H., Yoshihara, M. et al. Does postoperative prophylactic irradiation of para-aortic lymph nodes reduce the risk of recurrence in uterine cervical cancer with positive pelvic lymph nodes?. Int J Clin Oncol 24, 567–574 (2019). https://doi.org/10.1007/s10147-018-1376-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10147-018-1376-2