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Journal of Biomedical Optics

Differentiating gastrointestinal stromal tumors from gastric adenocarcinomas and normal mucosae using confocal Raman microspectroscopy
Author(s): Chih-Wei Hsu; Chia-Chi Huang; Jeng-Horng Sheu; Chia-Wen Lin; Lien-Fu Lin; Jong-Shiaw Jin; Wenlung Chen
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Paper Abstract

Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract, and gastric adenocarcinomas are a common cancer worldwide. To differentiate GISTs from adenocarcinomas is important because the surgical processes for both are different; the former excises the tumor with negative margins, while the latter requires radical gastrectomy with lymph node dissection. Endoscopy with biopsy is used to distinguish GISTs from adenocarcinomas; however, it may cause tumor bleeding in GISTs. We reported here the confocal Raman microspectroscopy as an effective tool to differentiate GISTs, adenocarcinomas, and normal mucosae. Of 119 patients enrolled in this study, 102 patients underwent gastrectomy (40 GISTs and 62 adenocarcinomas), and 17 patients with benign lesions were obtained as normal mucosae. Raman signals were integrated for 100 s for each spot on the specimen, and 5 to 10 spots, depending on the sample size, were chosen for each specimen. There were significant differences among those tissues as evidenced by different Raman signal responding to phospholipids and protein structures. The spectral data were further processed and analyzed by using principal component analysis. A two-dimensional plot demonstrated that GISTs, adenocarcinomas, and normal gastric mucosae could be effectively differentiated from each other.

Paper Details

Date Published: 11 July 2016
PDF: 6 pages
J. Biomed. Opt. 21(7) 075006 doi: 10.1117/1.JBO.21.7.075006
Published in: Journal of Biomedical Optics Volume 21, Issue 7
Show Author Affiliations
Chih-Wei Hsu, Tungs' Taichung MetroHarbor Hospital (Taiwan)
National Chiayi Univ. (Taiwan)
Chia-Chi Huang, National Chung Cheng Univ. (Taiwan)
Jeng-Horng Sheu, National Chiayi Univ. (Taiwan)
Chia-Wen Lin, Hung Kuang Univ. (Taiwan)
Lien-Fu Lin, Tungs' Taichung MetroHarbor Hospital (Taiwan)
Jong-Shiaw Jin, Tungs' Taichung MetroHarbor Hospital (Taiwan)
Wenlung Chen, National Chiayi Univ. (Taiwan)

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