The utility of sentinel lymph node mapping in high-grade endometrial cancer

Edward J. Tanner, Laureen Ojalvo, Rebecca Lynn Stone, Kimberly Levinson, Sarah M. Temkin, Tricia Murdock, Russell Vang, Abdulrahman K. Sinno, Amanda Nickles Fader

Research output: Contribution to journalArticle

Abstract

Objective: The aim of this study was to report the utility and false-negative rates of sentinel lymph node (SLN) mapping during surgical staging of women with high-grade, apparent uterine-confined endometrial cancer. Methods: This was a single-institution study performed at a high-volume academic center. From December 2012 to December 2015, women with high-grade endometrial cancer (grade 3 endometrioid, serous, clear cell, and carcinosarcoma) underwent SLN mapping via cervical injection followed by robot-assisted total laparoscopic hysterectomy and completion lymphadenectomy. Ultrastaging of SLNs was performed in patients with tumors with any degree of myoinvasion. Patient demographics, SLN test characteristics, treatment, and recurrence outcomes were prospectively evaluated for analysis. Results: Fifty-two patients with high-grade histologic findings underwent SLN mapping followed by completion lymphadenectomy. The median patient age was 64 years, and median body mass indexwas 31.8 kg/m2. Most patients had either serous (46%) or grade 3 endometrioid histology (27%) on preoperative biopsy. Nine patients had nodal metastases, 7 of whom had metastases identified in SLNs. No low-volume nodalmetastaseswere identified on ultrastaging. Two patients had false-negative SLN mapping (22%). After a median follow-up of 15.6 months, 14 recurrences (27%) were diagnosed; all were distant or multisite relapses. Sentinel lymph node mapping did not impact the choice of adjuvant therapy or recurrence risk in node-positive patients. Conclusions: Sentinel lymph node detection of metastases in patients with high-grade endometrial cancer is high, but false-negative results were encountered. More research is needed to determine whether SLN mapping can safely replace systemic lymphadenectomy in women with high-risk histologic findings.

Original languageEnglish (US)
Pages (from-to)1416-1421
Number of pages6
JournalInternational Journal of Gynecological Cancer
Volume27
Issue number7
DOIs
StatePublished - Jan 1 2017

Keywords

  • Endometrial cancer
  • Sentinel lymph node mapping

ASJC Scopus subject areas

  • Oncology
  • Obstetrics and Gynecology

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