Predictive Value of Methylene Blue Combined with Indocyanine Green in Sentinel Lymph Node Metastasis in Breast Cancer: a Prospective Pilot Cohort Study

Overview

Journal Front Oncol

Specialty Oncology

Date 2024 Oct 24

PMID 39445056

Authors

Zecheng He

Fan Guo

Yuhan Liu

Yan Lin

Changjun Wang

Yidong Zhou

Qiang Sun

Affiliations

Soon will be listed here.

Abstract

Background: The status of sentinel lymph nodes is crucial for prognosis and treatment decisions in breast cancer patients. This study aimed to evaluate the predictive value of combined methylene blue and indocyanine green for sentinel lymph node metastasis in breast cancer.

Methods: This prospective cohort study enrolled 90 clinically node-negative breast cancer patients. Methylene blue and indocyanine green were injected locally before surgery. Sentinel lymph nodes were grouped based on fluorescence intensity and methylene blue staining. A binary logistic regression model was established using 285 lymph node groups to predict metastatic risk.

Results: A total of 475 lymph nodes were identified, with 33 being metastatic. The metastatic risk reached 70% for partially blue-stained and weakly fluorescent lymph nodes between 1-2 cm. The model revealed associations between lymph node size, dye staining patterns, and metastatic risks (P<0.05). The AUC of the ROC curve was 0.855.

Conclusions: The staining pattern of combined methylene blue and indocyanine green could predict risks of sentinel lymph node metastasis and facilitate rapid intraoperative identification of high-risk lymph nodes.

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