This paper considers factors that play a significant role in determining inspiratory pressure and energy losses in the human trachea. Previous characterisations of pathological geometry changes have focussed on relating airway constriction and subsequent pressure loss, however many pathologies that affect the trachea cause deviation, increased curvature, constriction or a combination of these. ...

Introduction Premalignant lesions are considered both a hyperplastic and dysplastic stage of epithelial lesions in the glottic larynx that may or may not progress into an invasive carcinoma. The evolution of laryngoscopic procedures in outpatients has provided better access to important information for safe and easy diagnosis of laryngeal pathologies. Objective The goal of this study was to det...

Intoduction: Dysphonia is the main symptom of lesions that affect the larynx. Many of those require surgical treatment. Vocal cord lesions are the most common and the most prevalent indication for laryngeal microsurgery. Aim: To conduct a study of laryngeal lesions and their management by microlaryngoscopy. Materials and methods:The main objective being to highlight the importance of microlaryn...

This experimental study looks at the problem of pathological disorders analysis from speech signals. Knowing that the vocal tract pathologies provide acoustic changes commonly called dysphonia. In particular, laryngeal pathologies have an effect on the larynx and vocal cords. When regarding to the speech production model, source-filter, the impact is even more apparent in the glottal source. Ou...

The vertical position of the larynx seems to be relevant to voice function. As a high vertical larynx position is often seen in hyperfunctional and strained voices, a lowering of a habitually elevated larynx is sometimes a specific goal in clinical voice therapy and different larynx-lowering exercises are used to achieve this goal. Earlier investigations have shown that pitch and to some extent...

background: actinomycosis is an indolent, slowly progressive infection caused by non acid fast, gram positive, anaerobic or microaerophilic bacteria. the most common site of actinomycosis infection is cervicofacial region. bacteriologic identification from infected site or detection of sulfur granules confirms the diagnosis. we report a rare case of simultaneous infection of larynx and lungs ac...

laryngeal leiomysarcoma is an extremely rare malignancy originating from smooth muscle cells. its rarity is due to the fact that only less than 50 cases of pure laryngeal leiomyosarcoma and less than 10 cases of hypopharyngeal leiomyosarcaoma have been reported in modern medical literature.  even though the clinical presentation mimics that of a laryngeal carcinoma forming the major bulk of the...

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