نتایج جستجو برای: paranasal sinus neoplasms

تعداد نتایج: 535201  

Journal: :The Ulster Medical Journal 1993
K. D. Pereira P. Leyden A. C. Miller

Nasal polyps are benign oedematous outgrowths of respiratory mucosa which frequently present to the clinician as a cause of nasal obstruction. Though nasal and sinus polyps are not true neoplasms, long -standing inflammation can lead to metaplastic changes on the surface of the mucosa, and occasionally even to carcinoma. We report a case who presented with typical findings of nasal polyposis, b...

2013
Vijendra Shenoy Vinod Maller Vijetha Maller

Introduction. An antrolith is a calcified mass within the maxillary sinus. The origin of the nidus of calcification may be extrinsic (foreign body in sinus) or intrinsic (stagnant mucus and fungal ball). Most antroliths are small and asymptomatic. Larger ones may present as sinusitis with symptoms like pain and discharge. Case Report. We report a case of a 47-year-old lady who presented with he...

Introduction: Plasmacytoma is a monoclonal proliferation of plasma cells. It can be an isolated lesion, for which the term extramedullary plasmacytoma is used, or a representation of multiple myeloma.The upper respiratory tract is the most common site for an extramedullary plasmacytoma. Sinonasal plasmacytomas cause different symptoms depending on the sites of origins and the areas of involveme...

2013
Hakan Korkmaz Mukadder Korkmaz

Although a variety of theories have been proposed about functions of the paranasal sinuses, not one is clear today. Nonetheless, paranasal sinus-related diseases are associated with a high rate of morbidities. Therefore, it is essential to identify the structure and pathophysiology of the paranasal sinuses. Computed tomography (CT) is a valuable tool displaying anatomic variations and diseases....

2016
Ankita Joshi

Paranasal sinus anatomical anomalies with unknown etiology are common. Paranasal sinus–related diseases are associated with so high rate of morbidities, it becomes essential to identify the structure and pathophysiology of the paranasal sinuses. Computed tomography (CT) is a valuable tool in displaying its anatomy, any anatomic variations and diseases. As paranasal sinus development is a comple...

2015
Yusuke Kabeya Kiyoe Kato Masuomi Tomita Takeshi Katsuki Yoichi Oikawa Akira Shimada

BACKGROUND The association between diabetes and paranasal sinus disease has not been thoroughly investigated. METHODS We cross-sectionally investigated the association between diabetes and the presence of paranasal sinus disease, which was confirmed by a head MRI scan in 1350 adults who underwent a health screening program focusing on brain diseases and metabolic syndrome. Logistic regression...

Journal: :Ear, nose, & throat journal 2012
Lester D R Thompson

Mucocele of the paranasal sinuses is a distinct clinicopathologic entity in which there is obstruction of the sinus cavity outflow tract, resulting in expansion of the sinus walls. The histologic features are quite nonspecific, requiring clinical, radiologic, and pathologic correlation. Most of these lesions result from increased pressure in the sinus due to sinus outlet obstruction, usually as...

حسین قناعتی, , ساناز آقایی, , سید امیرحسین جلالی, , مجید شکیبا, , نگار صالحیان زندی, ,

Background: Imaging abnormalities in the paranasal sinuses are regularly noted as incidental findings on MRI, however, little is known about their prevalence in the Iranian population. The purpose of this study was to classify these findings in the paranasal sinuses as seen on MRI and to investigate the prevalence, according to site and type of paranasal abnormality.Methods: In this cross-secti...

Journal: :Clinical case reports and studies 2022

Epithelial myoepthial carcinoma (EMEC) is rare, low grad tumor with epithelial and myoepithelial components frequent local recurrence, also called glycogen rich adenoma (clear cell pattern), myoepithelioma (spindle plamocytiod patterns), (if only differentiation marked cytologic atypia). Occurs most frequently in the major salivary glands accounts for approximately 1% of all gland neoplasms tha...

Journal: :journal of current ophthalmology 0
محمد اعتضاد رضوی mohammad etezad razavi محمد خلیفه mohammad khalifeh محمدرضا انصاری آستانه mohammad reza ansari astaneh مازوچی m mazuchi

purpose : to report a patient with sphenoid sinus mucocele (ssm) case report : the patient is a 19-year-old man who was referred to khatam-al-anbia eye center as retrobulbar optic neuritis. brain and orbital ct scan and mri revealed ssm. the patient underwent endoscopic sinus surgery and visual acuity (va) improved from no light perception (nlp) to 2 meter counting fingers. conclusion : ssm may...

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