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Anatomic variants paranasal sinus

Dilesh Mogre, Gyorgy Banhegyi, Hoo Kee Tsan, Samuel C Leong
Facial pain is not an uncommon reason for referral to an otolaryngologist, frequently misdiagnosed as sinusitis by primary care professional. However, many of these 'sinus headache' patients do not have concomitant clinical symptoms suggestive of sinus infection such as purulent discharge or pyrexia [1]. Most actually suffer from non-sinugenic facial pain conditions such as atypical migraine or tension headache [2]. This article is protected by copyright. All rights reserved.
June 16, 2018: Clinical Otolaryngology
D Messineo, S Masieri, C Cavaliere
Rhinitis is an underestimated clinical condition, which has a considerable impact on the quality of life of the affected patients. The subject of this review focuses on three fundamental aspects: the development of knowledge concerning anatomic landmarks, the development of radiological imaging technology, and developments that can make a difference in the treatment of allergic rhinitis. The anatomical study of paranasal sinuses has been conducted since the time of the ancient Egyptians. Development of radiological equipment from the early 1900s has helped to improve information on the morphology of paranasal sinuses, sufficient to be considered valuable information regarding frontal anatomy and its variability...
January 2018: Journal of Biological Regulators and Homeostatic Agents
F Martino, R Di Mauro, K Paciaroni, J Gaziev, C Alfieri, L Greco, R Floris, S Di Girolamo, M Di Girolamo
OBJECTIVES: Sickle cell anemia (SCA) and β -thalassemia major are well-recognized beta-globin gene disorders of red blood cells associated to mortality and morbidity included bone morbidities due to ineffective erythropoiesis and bone marrow expansion, which affect every part of the skeleton. While there are an abundance of described disease manifestations of the head and neck, the manner of paranasal sinuses involvement and its relations to β-thalassemia and SCA process was not studied yet...
March 2018: International Journal of Pediatric Otorhinolaryngology
Gülay Açar, Aynur Emine Çiçekcibaşı, İbrahim Çukurova, Kemal Emre Özen, Muzaffer Şeker, İbrahim Güler
INTRODUCTION: The type of endoscopic approach chosen for vidian neurectomy can be specified by evaluating the vidian canal and the surrounding sphenoid sinus structures. OBJECTIVE: The variations and morphometry of the vidian canal were investigated, focusing on the functional correlations between them which are crucial anatomical landmarks for preoperative planning. METHODS: This study was performed using paranasal multidetector computed tomography images that were obtained with a section thickening of 0...
December 26, 2017: Brazilian Journal of Otorhinolaryngology
Ali Tayebi Meybodi, Vera Vigo, Arnau Benet
This anatomic image demonstrates the sphenoethmoidal (Onodi) cell (a variant of the paranasal sinuses), the identification of which is critical to prevent neurovascular injury during endoscopic approaches to the sella and adjacent regions of the skull base.
July 2017: World Neurosurgery
L P Chmielik, A Chmielik
BACKGROUND: The Onodi cell (sphenoethmoidal air cell) is an anatomic variant of the most posterior ethmoid cell that pneumatised superiorly and laterally to the sphenoid sinus, and is in close relation to the optic nerve. The proper identification of the Onodi cell is essential during a pre-operative computer tomography (CT) examination, as the presence of that ethmoid cell variant makes sphenoid sinus surgery more risky. The bulging of the optic nerve to the ethmoid cell wall is well visualized during endoscopic examination, but there are no clearly defined criteria for a potentially dangerous Onodi cell type in CT examinations...
June 2017: International Journal of Pediatric Otorhinolaryngology
Marco Capelli, Patrizia Gatti
INTRODUCTION: Inflammatory diseases of the maxillary sinus favour the thickening of the sinus mucosa. Therefore, it might be possible to establish a radiological, pathological threshold of mucosal thickening. Furthermore, there is an association between common anatomic variants of the nose and maxillary mucosal thickening. AIM: To define the pathological thickening of maxillary sinus mucosa and its association with the presence of common anatomic variants (concha bullosa, Haller's cell and accessory maxillary ostium)...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
Estushi Iida, Yoshimi Anzai
This article reviews the normal anatomy and variants of the anterior skull base and sinonasal cavities that are relevant to endoscopic sinus and skull base surgery. Radiologists should be aware of sinonasal anatomy that can be impediments to surgical access and increase risk of vascular or cranial nerve injury during surgery. Imaging features of the paranasal sinuses and anterior skull base pathologies are also discussed.
January 2017: Radiologic Clinics of North America
Johnny Wu, Ravi Jain, Richard Douglas
OBJECTIVE: The role of anatomical variants of the paranasal sinuses in the aetiology of chronic rhinosinusitis (CRS) is not well understood. Furthermore, the effect of anatomical variants on long-term outcomes has not been described. This study aims to assess the effects of anatomical variants of the middle meatus on patients with limited and diffuse CRS. METHODS: A database analysis was conducted for patients with limited sinusitis (undergoing anterior FESS) and patients with diffuse sinusitis (undergoing complete FESS) between 2009 and 2013...
August 2017: Auris, Nasus, Larynx
Raluca Ancuta Roman, Mihaela Hedeşiu, Mirela Gersak, Floarea Fidan, Grigore Băciuţ, Mihaela Băciuţ
BACKGROUND AND AIMS: To asses, by using the Cone Beam CT (CBCT) reformatted images, the presence of anatomical variants of the sinonasal cavities and to determine the correlation of these variations with the onset of maxillary sinus inflammations. METHOD: The study is a retrospective one and consists of the investigation of 130 patients with CBCT imaging, patients that were referred to the Maxillo-Facial Clinic, Radiology Department of the Iuliu Hatieganu University of Medicine and Pharmacy in Cluj-Napoca, for clinical symptoms of sinusitis within a period of 24 months...
2016: Clujul Medical (1957)
Vandana Mendiratta, Nitish Baisakhiya, Dalbir Singh, Ginni Datta, Amit Mittal, Parveen Mendiratta
To evaluate the incidence of anatomical variations in sinonasal area by nasal endoscopy and CT scan paranasal sinuses and to correlate the anatomical variations in sinonasal area with extent of disease. The present study was conducted on 40 patients of chronic sinusitis. All the patients underwent CT scan paranasal sinus axial and coronal view and nasal endoscopy. The most common anatomical variations were agger nasi cells (80 %), deviated nasal septum (72.5 %) and concha bullosa (47.5 %). Other anatomical variations seen in sinonasal region were uncinate process variations, paradoxical middle turbinate, haller cells, accessory ostia of maxillary sinus, multiseptated sphenoid...
September 2016: Indian Journal of Otolaryngology and Head and Neck Surgery
Paolo Farneti, Anna Riboldi, Vittorio Sciarretta, Ottavio Piccin, Paolo Tarchini, Ernesto Pasquini
PURPOSE: The endoscopic bidimensional vision offered by the endoscope during endoscopic sinus surgery involves difficulty in visualizing surgical field depth which makes it difficult to learn this surgical technique and makes it necessary for the endoscopic surgeon to mentally create a three-dimensional (3D) picture of the paranasal sinuses anatomy. In particular, frontal recess surgery requires good knowledge of its anatomic position, also since it is necessary to use angled endoscopes, which distort the view, and angular instruments which are difficult to use...
February 2017: Surgical and Radiologic Anatomy: SRA
Imen Ben Salha, Shree Bhide, Despoina Mourtzoukou, Cyril Fisher, Khin Thway
Adenoid cystic carcinoma (ACC) is a malignant neoplasm that mainly affects the salivary glands but has been described in many other anatomical sites. It is composed of basaloid cells with myoepithelial/basal cell differentiation and ductal epithelial cells that proliferate in a fibrous stroma, with variable amounts of myxohyaline material. Three patterns (cribriform, tubular, and solid) occur, and the solid variant is characterized by a predominant compact sheet-like and nested pattern of rounded basaloid cells lacking obvious cribriform or tubular architecture...
August 2016: International Journal of Surgical Pathology
Patricia Anne Loftus, Juan Lin, Abtin Tabaee
BACKGROUND: The incidence and potential disease impact of paranasal sinus anatomic variants in patients with recurrent acute rhinosinusitis (RARS) has important implications for management, including surgery, but is incompletely defined. METHODS: A retrospective review of 26 patients with RARS who had undergone computed tomography (CT) was performed. Patient demographics, RARS severity and comorbidities were reviewed. CT scans were reviewed for the incidence of anatomic variants in all patients...
March 2016: International Forum of Allergy & Rhinology
Saurabh Kumar, Arun Paul, Abhishek Ghosh, Rohan Raut
The term juvenile ossifying fibroma (JOF) is used in literature in naming two microscopically distinct fibro-osseous lesions of the craniofacial skeleton. One is characterized by small uniform spherical ossicles resembling psammoma bodies (psammomatoid JOF [PsJOF]). The other is distinguished by trabeculae of fibrillary osteoid and woven bone (trabecular JOF). Psammomatoid ossifying fibromas represent a unique subset of fibro-osseous lesions of the craniofacial region. PsJOF has been distinguished because of its location, clinical behavior, and age of occurrence...
October 2015: Contemporary Clinical Dentistry
Sanjay Vaid, Neelam Vaid
It is imperative for all imaging specialists to be familiar with detailed multiplanar CT anatomy of the paranasal sinuses and adjacent structures. This article reviews the radiologically relevant embryology of this complex region and discusses the region-specific CT anatomy of the paranasal sinuses and surrounding structures. Radiologists also need to know the clinical implications of identifying preoperatively the numerous anatomic variations encountered in this region and prepare a structured report according to the expectations of the referring clinician...
November 2015: Neuroimaging Clinics of North America
Amin Rahpeyma, Saeedeh Khajehahmadi
Open sinus lift surgery is a form of pre-prosthetic surgery for increasing the quality and quantity of bone in the posterior region of the maxilla. Pre-operative assessment of the maxillary sinus is essential for the success of this surgery. PubMed search was carried out in English language literature for open sinus lift surgery and cone-beam computed tomography (CBCT). The results focused on anatomic variants, vascular anatomy, complications, osteotomy/ostectomy window dimensions and thickness of the Schneiderian Membrane...
September 2015: Journal of International Oral Health: JIOH
Salvatore V Labruzzo, Nafi Aygun, S James Zinreich
The purpose of this article is to identify and define the appropriate imaging techniques in the evaluation of post-functional endoscopic surgery (FESS) complications. Although most complications encountered during FESS are identified readily during surgery, some are less conspicuous and require postoperative imaging. As illustrated in this article, these include cerebrospinal fluid leak, vascular injury, brain injury, orbital injury, and infectious complications of the brain and meninges. Some of the common anatomic variants of the paranasal sinuses are identified, and how these may predispose to surgical complications is discussed...
October 2015: Otolaryngologic Clinics of North America
Katya A Shpilberg, Simon C Daniel, Amish H Doshi, William Lawson, Peter M Som
OBJECTIVE: The purpose of this study was to determine the incidence of sinonasal anatomic variants and to assess their relation to sinonasal mucosal disease. MATERIALS AND METHODS: A retrospective evaluation of 192 sinus CT examinations of patients with a clinical history of rhinosinusitis was conducted. The CT scans were evaluated for the presence of several anatomic variants of the sinonasal cavities, and the prevalence of each variant was calculated. Prevalences of all sinonasal anatomic variants were compared between patients who had minimal to no apparent imaging evidence of rhinosinusitis and those who had radiologic evidence of clinically significant rhinosinusitis...
June 2015: AJR. American Journal of Roentgenology
B Anusha, A Baharudin, R Philip, S Harvinder, B Mohd Shaffie, R R Ramiza
PURPOSE: Failure of a surgeon to understand the local variations of the anatomical landmarks of the sphenoid sinus is a potential risk factor to cause damage to the optic nerve (ON) or internal carotid artery (ICA) that lies on the walls of the sphenoid sinus. The aim of this study was to identify the anatomical variants of the sphenoid sinus and its related surrounding structures among the Southeast Asian (SEA) population, based on computed tomography (CT) scans. MATERIALS AND METHODOLOGY: This cross-sectional study analyzed 300 CT scans of the brain, paranasal sinuses (PNS), and head and neck (H&N) at a tertiary referral centre in Malaysia utilizing the Osirix software...
December 2015: Surgical and Radiologic Anatomy: SRA
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