1. Long-term outcomes after near-infrared sentinel lymph node mapping in non–small cell lung cancer.
- Author
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Digesu, Christopher S., Hachey, Krista J., Gilmore, Denis M., Khullar, Onkar V., Tsukada, Hisashi, Whang, Brian, Chirieac, Lucian R., Padera, Robert F., Jaklitsch, Michael T., and Colson, Yolonda L.
- Abstract
Objective To report the first analysis of long-term outcomes using near-infrared (NIR) image-guided sentinel lymph node (SLN) mapping in non–small cell lung cancer (NSCLC). Methods Retrospective analysis of patients with NSCLC enrolled in 2 prospective phase 1 NIR-guided SLN mapping trials, including an indocyanine green (ICG) dose-escalation trial, was performed. All patients underwent NIR imaging for SLN identification followed by multistation mediastinal lymph node sampling (MLNS) and pathologic assessment. Disease-free (DFS) and overall survival (OS) were compared between patients with NIR + SLN (SLN group) and those without (non-SLN group). Results SLN detection, recurrence, DFS, and OS were assessed in 42 patients with NSCLC who underwent intraoperative peritumoral ICG injection, NIR imaging, and MLNS. NIR + SLNs were identified in 23 patients (SLN group), whereas SLNs were not identified in 19 patients enrolled before ICG dose and camera optimization (non-SLN group). Median follow-up was 44.5 months. Pathology from NIR + SLNs was concordant with overall nodal status in all 23 patients. Sixteen patients with SLN were deemed pN0 and no recurrences were, whereas 4 of 15 pN0 non-SLN patients developed nodal or distant recurrent disease. Comparing SLN versus non-SLN pN0 patients, the probability of 5-year OS is 100% versus 70.0% ( P = .062) and 5-year DFS is statistically significantly improved at 100% versus 66.1% ( P = .036), respectively. Among the 11 pN+ patients, 7 were in the SLN group, with >40% showing metastases in the SLN alone. Conclusions Patients with pN0 SLNs showed favorable disease-free and overall survival. This preliminary review of NIR SLN mapping in NSCLC suggests that pN0 SLNs may better represent true N0 status. A larger clinical trial is planned to validate these findings. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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