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Abstract 54: False Negative Rate SPY-Elite–assisted Sentinel Lymph Node Biopsy in Consecutive Cutaneous Melanoma Patients

Plastic and Reconstructive Surgery – Global Open: April 2016 - Volume 4 - Issue 4S - p 29
doi: 10.1097/01.GOX.0000488924.01607.73
PRS AAPS Oral Proofs 2016

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Rafael A. Couto, MD, Brendan Alleyne, MD, Jason M. Korn, MD, Paul Durand, MD, Steven Rueda, MD, Gregory A. Lamaris, MD, Brian Gastman, MD

From the Cleveland Clinic Foundation, Cleveland, Ohio.

PURPOSE: Despite the advances in the management of cutaneous melanoma, the false negative sentinel lymph node biopsy (SLNB) rate is still 5.2% to 22.0%. Indocyanine green SPY-Elite navigation for SLNB is a novel technique shown to be effective in this population. The aim of this study is to determine the false negative rate of SLNB using indocyanine green SPY-Elite navigation.

METHODS: Consecutive cutaneous melanoma patients who underwent radioisotope and indocyanine green SPY-Elite SNLB by the senior author (B.G.) from 2011 to 2014 were prospectively studied. Patient inclusion criteria were as follows: (1) meeting the National Comprehensive Cancer Network criteria for SLNB and (2) a negative SLNB. The outcome variable was false negative SLNB (regional nodal recurrence in previously sampled negative SLN basin). Follow-up time was date of surgery to the date of last follow-up/death. Predictive variables included age, sex, Breslow thickness, mitotic index/mm2, tumor-node-metastasis staging, and tumor and SLNB location.

RESULTS: The study composed of 100 subjects: 56.0% males and 44.0% females. Tumor locations were as follows: trunk (35.0%), upper extremity (25.0%), head/neck (23.0%), and lower extremity (17.0%). Most common SLNB locations were the axilla (46.5%), followed by the groin (21.0%). Mean follow-up time was 18.9 (±8.4) months. Mean Breslow thickness and mitotic index/mm2 were 1.2 (±0.8) cm and 2.0 (±2.6), respectively. Ulceration was observed in 16.7% of patients. No false negative SNLBs were observed. This technique exhibited a specificity and negative predictive value of 100%.

CONCLUSIONS: Indocyanine green SPY-Elite–assisted SLNB exhibits high specificity and negative predictive value; it is an effective and reliable technique. This is an ongoing study with continuous patient enrollment.

© 2016 American Society of Plastic Surgeons