期刊
JOURNAL OF PERSONALIZED MEDICINE
卷 13, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/jpm13010090
关键词
lung tumors; occult micrometastases; sentinel lymph node; near-infrared fluorescence; indocyanine green; electromagnetic navigation bronchoscopy
Occult micrometastases, which routine pathological analysis may miss, can be detected through mapping of the pulmonary lymphatic system by near-infrared fluorescence imaging. Identifying the sentinel lymph node (SLN) through this technique and analyzing it using immunohistochemistry may improve micrometastasis detection and staging in non-small cell lung cancer (NSCLC) patients undergoing thoracic surgery. This study assessed the feasibility and safety of identifying SLNs using NIR fluorescence imaging in NSCLC patients.
Occult micrometastases can be missed by routine pathological analysis. Mapping of the pulmonary lymphatic system by near-infrared (NIR) fluorescence imaging can identify the first lymph node relay. This sentinel lymph node (SLN) can be analyzed by immunohistochemistry (IHC), which may increase micrometastasis detection and improve staging. This study analyzed the feasibility and safety of identifying SLNs in thoracic surgery by NIR fluorescence imaging in non-small cell lung cancer (NSCLC). This was a prospective, observational, single-center study. Eighty adult patients with suspected localized stage NSCLC (IA1 to IIA) were included between December 2020 and May 2022. All patients received an intraoperative injection of indocyanine green (ICG) directly in the peri tumoural area or by electromagnetic navigational bronchoscopy (ENB). The SLN was then assessed using an infrared fluorescence camera. SLN was identified in 60 patients (75%). Among them, 36 SLNs associated with a primary lung tumor were analyzed by IHC. Four of them were invaded by micrometastases (11.1%). In the case of pN0 SLN, the rest of the lymphadenectomy was cancer free. The identification of SLNs in thoracic surgery by NIR fluorescence imaging seems to be a feasible technique for improving pathological staging.
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