نتایج جستجو برای: paranasal sinus

تعداد نتایج: 43005  

2014
Mümtaz Taner Torun Fatih Turan Ümit Tuncel

INTRODUCTION Osteomas are slow- growing, benign tumors. They are the most common neoplasms of the paranasal sinuses. They are usually originates from the frontal and ethmoid sinus and much less frequently seen in the maxillary and sphenoid sinuses. Although the lamina papyracea is a part of ethmoid bone, a giant osteoma originated from the lamina papyracea is very uncommon. An osteoma of the pa...

Journal: :Archives of otolaryngology--head & neck surgery 2004
Hüseyin Ozdemir Remzi Altin Kamran Mahmutyazicioğlu Levent Kart Lokman Uzun Ahmet Savranlar Halit Davçanci Sadi Gündoğdu

OBJECTIVE To evaluate by computed tomographic scanning the paranasal mucosal changes of coal workers with and without pneumoconiosis. METHODS Examination of images and scores from paranasal computed tomographic scans. The study participants were 26 coal workers with pneumoconiosis, 29 coal workers without pneumoconiosis, and 20 controls. All were men. The extent and patterns of inflammatory p...

Journal: :Archives of otolaryngology--head & neck surgery 2008
Giulio Cantù Gabriella Bimbi Rosalba Miceli Luigi Mariani Sarah Colombo Stefano Riccio Massimo Squadrelli Andrea Battisti Madia Pompilio Marco Rossi

OBJECTIVE To assess the frequency of nodal involvement and its prognostic value in malignant tumors of the paranasal sinuses, particularly in maxillary sinus squamous cell carcinoma. DESIGN Retrospective review. SETTING Tertiary cancer center. PATIENTS The medical records of 704 consecutive patients surgically treated for malignant tumors of the paranasal sinuses from January 1968 to Marc...

2004
LAWRENCE M. WITMER

Homology of virtually all major components of facial anatomy is assessed in Archosauria in order to address the function of the antorbital cavity, an enigmatic structure that is diagnostic for the group. Proposed functions center on its being a housing for a gland, a muscle, or a paranasal air sinus. Homology is approached in the context of the Extant Phylogenetic Bracket method of reconstructi...

2013
Alexandra Mavrodi George Paraskevas

Previously, anatomists considered paranasal sinuses as a mysterious region of the human skull. Historically, paranasal sinuses were first identified by ancient Egyptians and later, by Greek physicians. After a long period of no remarkable improvement in the understanding of anatomy during the Middle Ages, anatomists of the Renaissance period-Leonardo da Vinci and Vesalius-made their own contrib...

2016
Priyanko Chakraborty Rajiv Kumar Jain

Background: Chronic rhinosinusitis (CRS) refers to a group of disorders characterized by inflammation of the mucosa of the paranasal sinuses. Computed tomography (CT) scans used as the gold standard diagnostic modality of nose and paranasal sinus diseases. There has been a lot of studies regarding the anatomic variations leading to pathogenesis of paranasal sinus diseases. Considerable progress...

Journal: : 2021

Iatrogenic foreign bodies of the paranasal sinuses are extremely rare and, as a rule, during medical procedures. In this clinical case, fracture needle for puncture maxillary sinus required surgical treatment.

Journal: :European Journal of Translational and Clinical Medicine 2021

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.

2017
Peter Catalano

A mucocele of paranasal sinuses is a collection of mucus within an epithelial lined sinus whose outflow tract is permanently obstructed. The most common site for a mucocele is the frontal sinus; it is less common in the other sinuses. Frontal mucoceles present in different ways depending upon their size and duration, with symptoms often gradual and insidious. Symptoms are mainly ophthalmic and ...

Journal: :AJNR. American journal of neuroradiology 1991
R A Benedikt D C Brown M K Roth C A Geyer V N Ghaed

Idiopathic expansion of a paranasal sinus containing air and without an associated mass has been termed pneumosinus dilatans [1] . This rare disorder has been known to occur in all the paranasal sinuses, but it most commonly affects the frontal sinus. Clinical symptoms include pain , visual loss, proptosis, galactorrhea, and hypopituitarism [2-4]. Proposed mechanisms of origin include developme...

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