Cervical injection as an alternative to the utero-ovarian ligament for mapping pelvic sentinel lymph node in early-stage ovarian cancer.

Autores de IIS La Fe

• Víctor Lago Leal

  Autor

• Iria Rey Ferreira

  Autor

• Marta Arnáez De La Cruz

  Autor

• Pablo Padilla Iserte

  Autor

• Luis Javier Matute Tobias

  Autor

• Marta Gurrea Soteras

  Autor

• Pilar Bello Arques

  Autor

• Santiago Domingo Del Pozo

  Autor

Participantes ajenos a IIS La Fe

• Moner S

Grupos

• Grupo de Investigación en tumores ginecológicos, cáncer de mama y cáncer hereditario

• Medicina Fetal y Reproductiva

• Núcleo de investigación traslacional integrado Urológico de Valencia (NITIUV)

Abstract

PURPOSE: In early-stage ovarian cancer, sentinel lymph node (SLN) mapping using double injection into the utero-ovarian and infundibulo-pelvic ligaments has been postulated. Cervical injection, commonly used in other gynaecologic tumors, may provide a simpler alternative to utero-ovarian injection for pelvic-SLN detection. This study aims to demonstrate whether cervical and utero-ovarian injections drain to the same pelvic SLN using different tracers for each injection site: technetium-99m ((99m)Tc) at cervix and indocyanine green into the utero-ovarian ligament. METHODS: This prospective trial enrolled endometrial cancer patients scheduled for SLN biopsy from July 2023 to May 2024. Each hemipelvis was considered a case. (99m)Tc was injected at the cervix preoperatively. If (99m)Tc migration occurred, indocyanine green was injected into the utero-ovarian ligament intraoperatively. Concordance of migration was determined in those hemipelvis with both (99m)Tc-cervical and indocyanine green utero-ovarian migration. RESULTS: Seventeen patients (34 hemipelvis) were included. Migration from both injection sites occurred in 17 hemipelvis, identifying the same pelvic-SLN in all cases, being the concordance rate of 100%. Migration of (99m)Tc or indocyanine green from cervical injection was detected in 91.2% (95% CI 81.6-100%), whereas migration of indocyanine green injection from the utero-ovarian ligament was detected in 73.9% (95% CI 56-91.9%); these detection rates were not significantly different (p = 0.077). CONCLUSIONS: Lymphatic migration from the cervix to the pelvis seems to be comparable to the migration from the utero-ovarian ligament to the pelvis, with both pathways converging at the same SLN.

© 2025. The Author(s).

Keywords

• Early-stage; Indocyanine green; Injection site; Ovarian cancer; Sentinel lymph node; Technetium-99 m