We used pipe models to investigate the effects of paranasal sinus ostium size and paranasal sinus volume on the area-distance curves derived by acoustic rhinometry (AR). Each model had a Helmholtz resonator or a short neck as a side branch that simulated the paranasal sinus and sinus ostium. The AR-derived cross-sectional areas posterior to the ostium were significantly overestimated. Sinus vol...

non-penetrating head injuries associated with skull base fractures can lead to the development of pneumocephalus upon airs ingress, which leads its course in the subarachnoid space. intracerebral air accumulation is rare and ensuses when a paranasal sinus fracture is associated with a ensues when a paranasal sinus fracture is associated with a nearby parenchymal contusion. a 25-year old man is ...

Midline destructive lesions (MDLs) are a diagnostic challenge due to an extensive differential diagnosis and vague presenting signs symptoms. It may be neoplastic, autoimmune, traumatic, infectious, or unknown. The lethal characterized by ulcerative destruction of midline structures the face like nose, paranasal sinus palate. A spectrum diseases with myriad clinicopathological features can pres...

Malignant tumors of the sinuses and nasal cavity are rare diseases. Squamous cell carcinoma is most common histological type (55–70 % cavity). The frequency neuroendocrine reaches 5 %. Currently, there no generally accepted standard for treatment sinonasal localization. If surgical associated with a significant deterioration quality life or poor outcomes, chemoradiotherapy can be recommended. T...

Introduction/Background The paranasal sinuses consist of the maxillary, ethmoid, sphenoid, and frontal sinuses. They communicate with the nasal cavity in the midline and all structures together form a group of air-filled cavities where cancers can arise, grow, and spread without encountering significant barriers to local extension. Cancers of the paranasal sinuses and nasal cavity are rare mali...

The current work aimed to analyse the anatomical findings of the nasal and paranasal sinuses of the donkey by gross anatomical observation of the skull and cadaver head, cross-sections, sagittal sections and computed tomography (CT) imaging. Seven adult donkeys and ten skulls were used in this study. The donkey head had six pairs of sinuses, three paranasal; the frontal, maxillary, and sphenopa...

trigeminal nerve. The patient subsequently died of a subarachnoid hemorrhage due to an aneurysm caused by Aspergillus infection. Although Aspergillus commonly originates in the lungs, more cases of paranasal sinus aspergillosis are being reported. It is possible that our patient had a paranasal sinus Aspergillus infection that extended into the orbital apex and carotid artery, although imaging ...

Fibro-osseous lesions of the face and paranasal sinuses are relatively uncommon. These lesions have overlapping clinical, radiologic and pathologic features causing difficulty in diagnosis. Neoplastic fibro-osseous paranasal sinus lesions can be benign or malignant. The benign fibro-osseous lesions described are: ossifying fibroma (and its histologic variants) and fibrous dysplasia. The variant...

The paranasal sinus system of horses is complex, comprising six pairs of sinuses. Disease processes that can develop in the sinuses include ethmoid hematomas, cysts, neoplasia, and bacterial and fungal infections. Horses that develop paranasal sinus disease vary widely in age. A significant number of clinical conditions involving the paranasal sinuses require a combination of diagnostic tests t...

INTRODUCTION The aim of this work was to analyze the occurrence of inverted papilloma within the nose and paranasal sinuses, the extent of lesions and the clinical course in the patients who underwent endoscopic surgery. MATERIALS AND METHODS Between the years of 2006-2012, at the Department of Otolaryngology and Laryngological Oncology, 2295 patients were subjected to surgery due to paranasa...