The use of noninvasive techniques to evaluate the larynx and vocal tract helps the speech specialists to perform accurate diagnose of diseases. In this study, a method to distinguish among 21 different pathologies using speech signals was developed. Through inverse filtering (Kalman and Wiener filters) of the voice signal, the residue was estimated and seven acoustic features were extracted fro...

For GI endoscopists and otolaryngologists, esophageal introitus (EI) is an arbitrary yet overlapping boundary. Many times, the term EI is used interchangeably with pharyngoesophageal sphincter or upper esophageal sphincter. In this review, the authors broadened the definition of EI to cover the lower part of the hypopharynx posterior to the larynx, the esophageal opening posterior to the cricoi...

OBJECTIVES/HYPOTHESIS Laryngeal chondrosarcomas are rare entities that arise from the cartilaginous structures of the larynx, including the cricoid, thyroid cartilage, epiglottis, and arytenoid cartilages. These tumors represent a minority of malignancies involving the larynx and can be mistaken for benign pathologies. The treatment has historically been surgical excision, often by total laryng...

The importance of mucosal wave detection and estimation has been stressed in literature regarding the automatic classification and recognition of larynx pathologies from voice records. Using a new estimation method of the mucosal wave correlate and simulation results from a 2-mass model of the vocal folds the present paper shows that the main fingerprints found in the power spectral density of ...

Introduction: Laser surgery of the larynx is currently standard clinical practice in a multitude procedures. Lasers with photoangiolytic properties have wide application endolaryngeal lesions. One their most prominent features ability to coagulate blood vessels, reducing unwanted tissue damage. Our objective expose uses blue laser (445 nm) larynx. Material and methods: A retrospective study was...

Objective: This work aimed to describe the trachea of Magellanic Penguin (Spheniscus magellanicus) through descriptive and morphometric approaches. Methods: ten adult male Spheniscus magellanicus were used, which collected, fixed, kept immersed in an aqueous solution 10% formaldehyde. Results: penguin began caudally from cricoid cartilage larynx, represented by 121.3±5.65 cartilaginous rings jo...

OBJECTIVE A wide range of lasers have been used in the larynx. Diode laser is a portable and relatively inexpensive laser which is delivered via a glass fibre hand-held probe. The objective of this study was to report our experience with the use of diode laser in a variety of paediatric airway pathologies. METHODS In this study, 90 diode laser laryngeal procedures were performed on 31 patient...

in the head and neck region, tracheal and larynx paragangliomas are much less common and subglottic paragangliomas have been rarely reported. less than 60 cases with larynx paraganglioma and a few cases with ‎trachea paraganglioma have been reported ‎until know in the literature. ‎this report describes a 28 year old man suffering from progressive dyspnea due to tracheal and subglottal tumor. ‎h...

we describe a rare case of laryngeal fasciitis ossificans. a 58-year-old man presented with hoarseness and a nodule was found in the larynx. excisional biopsy was performed, and follow-up laryngoscopy showed complete resolution of this reactive lesion, and normal laryngeal function. the 0.6 cm diameter nodule was well circumscribed and histologically, the lesion was composed of uniform woven bo...

OBJECTIVES Optical coherence tomography (OCT) is an emerging imaging modality that combines low-coherence light with interferometry to produce cross-sectional images of tissue with resolution about 10 mum. Patients undergoing surgical head and neck endoscopy were examined using a fiberoptic OCT imaging probe to study and characterize microstructural anatomy and features of the larynx and benign...