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Isolated para-aortic lymph node metastasis in FIGO stage IA2-IB2 carcinoma of the cervix: Revisiting the role of surgical assessment.

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OBJECTIVES To investigate the utility of para-aortic lymph node dissection among women undergoing radical hysterectomy and pelvic lymph adenectomy for FIGO Stage IA2-IB2 cervical cancer using the National Cancer Database… Click to show full abstract

OBJECTIVES To investigate the utility of para-aortic lymph node dissection among women undergoing radical hysterectomy and pelvic lymph adenectomy for FIGO Stage IA2-IB2 cervical cancer using the National Cancer Database (NCDB). METHODS We identified patients with stage IA2-IB2 squamous cell, adenosquamous, or adenocarcinoma of the cervix diagnosed 2011-2014 in the NCDB. The primary outcome was the negative predictive value of histologically assessed pelvic lymph node status for para-aortic lymph node status among women undergoing pelvic and para-aortic lymph node dissection. We calculated probability of para-aortic lymph node metastasis conditional on pelvic lymph node status. Finally, we compared overall survival between patients undergoing para-aortic lymph node dissection and those in whom this procedure was omitted. RESULTS A total of 3212 patients met study inclusion criteria, of whom 994 (30.9%) underwent para-aortic lymph node dissection. In this group, the risk of isolated para-aortic metastasis was 0.11%. The negative predictive value of surgically assessed pelvic lymph nodes to predict para-aortic lymph node status was 99.9% (95% CI 99.9-99.9). Among 93 patients with pelvic lymph node metastasis, 18 (19.4%) had concurrent para-aortic lymph node metastasis. There was no difference in overall survival between women undergoing pelvic and para-aortic lymph node dissection compared with those undergoing pelvic lymphadenectomy only (p = 0.69). CONCLUSIONS In patients undergoing radical hysterectomy and pelvic lymphadenectomy for stage IA2-IB2 cervical cancer, para-aortic lymph node dissection is not warranted based on the low risk of isolated metastatic disease, and lack of survival benefit associated with the procedure.

Keywords: aortic lymph; lymph; para aortic; metastasis; lymph node

Journal Title: Gynecologic oncology
Year Published: 2018

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