INTRODUCTION The mucosal malignant melanoma (MM), represent a rare group of tumors (0.2%--8% of all MM), with predominant localization on the mucosal surface of head and neck region, where the localization on the mucosa of nasal cavity, paranasal sinuses and oral cavity are the most common. The mucosal MM within the nose and paranasal sinuses represent approximately 4% of all malignant tumors i...

The aim of this study was to (a) detect the prevalence of anatomical variations of nose and paranasal sinuses in Chronic Rhinosinusitis (CRS) on ‘Nasal Endoscopy’,and‘Computed Tomography’, (b) correlate between the two investigation modalities and (c) study association of anatomical variations of nose and paranasal sinuses in Chronic Rhinosinusitis. This Cross sectional study was carried out at...

To investigate whether relevant levels of nasal nitric oxide (NO) are produced in the absence of paranasal sinuses, we studied 17 healthy baboons, mammals without any paranasal sinuses. The animals were anesthetized with ketamine hydrochloride and breathed spontaneously. While the baboons breathed through a face mask (mouths closed) connected to a respirator, NO concentrations in exhaled gas we...

Inflammation of the equine paranasal sinuses is a relatively uncommon disease that may be caused by primary bacterial or mycotic infections (Mason 1975a), or can be secondary to dental disease (van der Velden & Verzijlenberg 1984, Scott 1987, Tremaine & Dixon 2001a), facial trauma, sinus cysts, progressive ethmoid hematoma or sinonasal neoplasia (Mansmann & Wheat 1973, Gibbs & Lane 1987, Tremai...

Actinomycosis is a chronic suppurating granulomatous disorder specific to soft tissue. It is produced by Actinomyces Israelii, gram positive anaerobic bacteria that are very difficult to culture, and a commensal saprophyte of the oral cavity (tonsillar crypts, saliva and gingival dental sulci) and the gastro-intestinal tract; it becomes a pathogen in the face of erosions of the oropharyngeal mu...

PURPOSE The aim of this study was to investigate paranasal sinus pathoses detected on cone-beam computed tomography (CBCT) in an adult population. PATIENTS AND METHODS Three observers retrospectively inspected 353 consecutive CBCT scans obtained in a dentomaxillofacial radiology department for paranasal sinus pathoses. Descriptive statistics and chi-square tests were used to determine the pre...

In this study, the temporal shape of voice-induced nitric oxide (NO) signals in exhaled air has been investigated in eight healthy individuals by means of laser magnetic resonance spectroscopy. The results of the experimental part have been compared with calculated signals obtained by using a simple one-compartment model of the paranasal sinuses. In the experimental part, a rapidly increasing N...

the paranasal sinuses are known to be a rare location for metastasis. renal cell carcinoma (rcc) is the most frequent primary tumor to metastasize to the sinonasal region, followed by lung and breast cancer. in particular, clear cell type rcc, which represents approximately 85% of rccs, is characterized by early metastasis, and it sometimes spreads to unusual sites (1, 2). metastatic tumors in ...

Background This study aimed to present the correlation between headaches and anatomical changes within nasal cavity paranasal sinuses. Material methods: includes a literature search our observations of 24 patients regarding with sinus anatomy.