Water Concentration Analysis by Raman Spectroscopy to Determine the Location of the Tumor Border in Oral Cancer Surgery

Elisa Lamego Barroso, Roeland Smits, Florence van Lanschot, Peter Caspers, Ivo Hove, Hetty Mast, A. Sewnaik, Jose Hardillo, Cees Meeuwis, Rob Verdijk, Vincent Noordhoek Hegt, R.J. Baatenburg de Jong, Eppo Wolvius, Tom Bakker Schut, Senada Koljenovic, Gerwin Puppels

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Adequate resection of oral cavity squamous cell carcinoma (OCSCC) means complete tumor removal with a clear margin of more than 5 mm. For OCSCC, 85% of the surgical resections appear inadequate. Raman spectroscopy is an objective and fast tool that can provide real-time information about the molecular composition of tissue and has the potential to provide an objective and fast intraoperative assessment of the entire resection surface. A previous study demonstrated that OCSCC can be discriminated from healthy surrounding tissue based on the higher water concentration in tumor. In this study, we investigated how the water concentration changes across the tumor border toward the healthy surrounding tissue on freshly excised specimens from the oral cavity. Experiments were performed on tissue sections from 20 patients undergoing surgery for OCSCC. A transition from a high to a lower water concentration, from tumor (76% +/- 8% of water) toward healthy surrounding tissue (54% +/- 24% of water), takes place over a distance of about 4 to 6 mm across the tumor border. This was accompanied by an increase of the heterogeneity of the water concentration in the surrounding healthy tissue. The water concentration distributions between the regions were significantly different (P < 0.0001). This new finding highlights the potential of Raman spectroscopy for objective intraoperative assessment of the resection margins. (C) 2016 AACR.
Original languageUndefined/Unknown
Pages (from-to)5945-5953
Number of pages9
JournalCancer Research
Issue number20
Publication statusPublished - 2016

Research programs

  • EMC MM-03-24-01
  • EMC OR-01-59-01
  • EMC OR-01-62-02

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