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  • Key words Laryngeal cancer  (1)
  • Prognosis  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 257 (2000), S. 17-23 
    ISSN: 1434-4726
    Keywords: Key words Laryngeal cancer ; Diagnosis ; Autofluorescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Differences in autofluorescence (fluorescence without photodynamic drugs) between normal and malignant tissues offer new possibilities in detecting and localizing early laryngeal carcinoma. Autofluorescence imaging was performed using a modified fluorescence endoscopy system from Xillix Technologies (Richmond, Canada). Fluorescence was induced by blue light at 442 nm and captured by an image-intensified camera through a laryngeal telescope. The images were then processed by the system and displayed on a video monitor. Normal tissue appeared green while malignant sites appeared reddish-brown. The autofluorescence imaging technique was compared to standard microlaryngoscopy in 108 patients with laryngeal pathologies (in 74 of whom malignancy was suspected). The acquired reflectance and fluorescence images of each lesion were assessed independently as malignant or not malignant by three ENT specialists who were familiar with the procedure but were not provided with clinical data or histopathological information concerning the lesion. The assessments of pathology were determined from the two imaging modalities and were compared to histopathological findings of the biopsy specimens taken from the lesion. The present study showed that autofluorescence imaging can be a useful complementary method to microlaryngoscopy for detecting and delineating laryngeal malignancies. If in the future, the device can be developed for use in an outpatient office, a significant improvement can be made for the early detection of laryngeal malignancies.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 254 (1997), S. S150 
    ISSN: 1434-4726
    Keywords: Laryngeal carcinoma ; Cathepsins B, D ; Stefins A, B ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Concentrations of cathepsins A, D and stefins A and B were measured in primary tumor and adjacent normal tissue of 25 patients with laryngeal carcinoma. Median concentrations of both cathepsins and that of stefin B were significantly higher in tumor tissue than in their normal counterparts (cathepsins B and D,P 〈 0.0001; stefin B,P = 0.01), indicating their possible involvement in the process of tumor spread. Early (T1 and T2) tumors had lower concentrations of stefins A and B than locally advanced (T3 and T4) tumors (P = 0.04). Disease-free and disease-specific survival rates at 45 months were significantly better in patients with tumor concentrations of stefins above or equal to the cut-off values (stefin A,P = 0.001 andP = 0.004; stefin B,P = 0.048 andP = 0.008), indicating that these might be of prognostic value. The concentrations of cathepsins B and D did not correlate with survival.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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