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Macroscopic Laryngeal Lesions clinical trials

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NCT ID: NCT02217358 Completed - Clinical trials for Recurrent Respiratory Papillomatosis

Value of Narrow Band Imaging (NBI) Endoscopy in the Early Diagnosis of Laryngeal Cancer and Precancerous Lesions

Start date: February 2012
Phase: N/A
Study type: Interventional

The aim of the project is to compare NBI endoscopy and standard endoscopic method using white light and evaluate accuracy both methods in early detection and diagnosis hypopharyngeal and laryngeal precancerous and cancerous lesions. A higher contrast between the mucosal epithelium and blood vessels is achieved in NBI endoscopy using filtered light comparing to white light observations. This allows detection of small mucosal changes, few millimetres in diameter, which are not observable using white light. The second aim in patients with squamous cell carcinoma of the upper aerodigestive tract is to compare extension of mucosal lesions by evaluation of NBI endoscopy and white light endoscopy, which is crucial for perform targeted biopsy and for determination of resection margins in cancer surgery. The investigators expect that dysplastic changes of mucosa or early laryngeal cancerous lesions are detected in white light endoscopy rarely. In case our hypothesis is confirmed, frequency of precancerous and early cancerous lesions of hypopharynx and larynx is more common in patients with non-specific symptoms of laryngeal and pharyngeal diseases.