title: Autofluorescence spectroscopy in the differentiation of laryngeal epithelial lesions - preliminary results.
abstract: Conclusions Autofluorescence spectroscopy may be a supporting tool for differential diagnosis of changes in laryngeal epithelium. Objectives Early detection and differential diagnosis of proliferative changes in the larynx are still a challenge for laryngologists. The aim of the study was to evaluate the autofluorescence spectroscopy technique to in vitro differential diagnosis of pathological changes in the epithelium of the larynx. Methods Forty-two patients aged 34-79 years were included in the study. The fifty-two tissue specimens, including 10 samples of cancerous lesion, 10 adjacent normal tissue, 10 chronic inflammation, eight cyst, three leukoplakia, four polyp, and seven Reinke's edema, were obtained during laryngological procedures. All tissue samples were independently diagnosed histopathologically. The autofluorescence emission spectra at two excitation wavelengths, 290 nm and 370 nm, were measured for every sample studied. Results The autofluorescence signals of cancerous tissue samples at both excitations exhibited identical emission band shapes of much lower intensities at their maxima as compared to the adjacent healthy tissue samples studied. The autofluorescence spectra intensities of cancerous and normal tissues varied inter-individually. Evident differences in autofluorescence intensities and its band shapes of different pathological laryngeal changes at the 290 nm excitations were demonstrated.
authors.affiliation: a Department of Otolaryngology with the Maxillary Surgery Ward , Dr J. Biziel Memorial University Hospital No. 2 , Bydgoszcz , Poland ;
authors.forename: Piotr
authors.initials: P
authors.lastname: Winiarski
authors.affiliation: b Chair of Medical Biology , Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University , Bydgoszcz , Poland ;
authors.forename: Karolina
authors.initials: K
authors.lastname: Szewczyk-Golec
authors.affiliation: c Department of Laser Therapy and Physiotherapy , Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University , Bydgoszcz , Poland ;
authors.forename: Paweł
authors.initials: P
authors.lastname: Orłowski
authors.affiliation: a Department of Otolaryngology with the Maxillary Surgery Ward , Dr J. Biziel Memorial University Hospital No. 2 , Bydgoszcz , Poland ;
authors.forename: Ewelina
authors.initials: E
authors.lastname: Kałużna
authors.affiliation: a Department of Otolaryngology with the Maxillary Surgery Ward , Dr J. Biziel Memorial University Hospital No. 2 , Bydgoszcz , Poland ;
authors.forename: Malwina
authors.initials: M
authors.lastname: Wamka
authors.affiliation: d Department of Phoniatry and Voice Rehabilitation , Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University , Bydgoszcz , Poland.
authors.forename: Hanna
authors.initials: H
authors.lastname: Mackiewicz-Nartowicz
authors.affiliation: d Department of Phoniatry and Voice Rehabilitation , Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University , Bydgoszcz , Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Sinkiewicz
authors.affiliation: c Department of Laser Therapy and Physiotherapy , Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University , Bydgoszcz , Poland ;
authors.forename: Jacek J
authors.initials: JJ
authors.lastname: Fisz
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007818:Laryngeal Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D061848:Optical Imaging; D010608:Pharyngeal Diseases / Q000000981:diagnostic imaging*; D013050:Spectrometry, Fluorescence
keywords: Fluorescence spectrometry; Reinke’s edema; laryngeal cyst; laryngeal neoplasm; laryngeal polyp; oral leukoplakia