Multimodality approach to optical early detection and  mapping of oral neoplasia

Early detection of cancer remains the best way to ensure patient survival and quality of life. Squamous cell carcinoma is usually preceded by dysplasia presenting as white, red, or mixed red and white epithelial lesions on the oral mucosa (leukoplakia, erythroplakia). Dysplastic lesions in the form...

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Veröffentlicht in:Journal of biomedical optics Jg. 16; H. 7; S. 076007
Hauptverfasser: Ahn, Yeh-Chan, Chung, Jungrae, Wilder-Smith, Petra, Chen, Zhongping
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 01.07.2011
Schlagworte:
9,10-Dimethyl-1,2-benzanthracene - toxicity
Animals
Carcinogens - toxicity
Carcinoma, Squamous Cell - diagnosis
Cricetinae
Humans
Image Enhancement
Imaging, Three-Dimensional
Leukoplakia, Oral - diagnosis
Mesocricetus
Mouth Neoplasms - chemically induced
Mouth Neoplasms - diagnosis
Neoplasms, Experimental - chemically induced
Neoplasms, Experimental - diagnosis
Scanning Laser Polarimetry - methods
Tomography, Optical Coherence - methods
ISSN:1560-2281, 1560-2281
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Zusammenfassung:Early detection of cancer remains the best way to ensure patient survival and quality of life. Squamous cell carcinoma is usually preceded by dysplasia presenting as white, red, or mixed red and white epithelial lesions on the oral mucosa (leukoplakia, erythroplakia). Dysplastic lesions in the form of erythroplakia can carry a risk for malignant conversion of 90%. A noninvasive diagnostic modality would enable monitoring of these lesions at regular intervals and detection of treatment needs at a very early, relatively harmless stage. The specific aim of this work was to test a multimodality approach [three-dimensional optical coherence tomography (OCT) and polarimetry] to noninvasive diagnosis of oral premalignancy and malignancy using the hamster cheek pouch model (nine hamsters). The results were compared to tissue histopathology. During carcinogenesis, epithelial down grow, eventual loss of basement membrane integrity, and subepithelial invasion were clearly visible with OCT. Polarimetry techniques identified a four to five times increased retardance in sites with squamous cell carcinoma, and two to three times greater retardance in dysplastic sites than in normal tissues. These techniques were particularly useful for mapping areas of field cancerization with multiple lesions, as well as lesion margins.
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ISSN:1560-2281
1560-2281
DOI:10.1117/1.3595850