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Radiological evaluation of septal bone variations in the sphenoid sinus Sfenoid sinüsteki septum varyasyonlar›n›n radyolojik incelenmesi ve Bilimsel Araflt›rmalar Derne¤i (SEBAD) (2014)
Citations
6 |
The reliability of computerized tomographic detection of the Onodi (Sphenoethmoid) cell.
- JS, WE, et al.
- 1998
(Show Context)
Citation Context ...of the sphenoid sinuses as early as 2 years of age. Pneumatization progresses in an inferior and posterolateral direction. The pneumatized basi-sphenoid plate often extends to, but not past, the spheno-occipital synchondrosis in the mature sphenoid sinus. The sinus attains its mature size by the age of 14 years.[5] Functional endoscopic sinus surgery (ESS) has a wide area of application in the treatment of benign, malignant and inflammatory diseases of paranasal sinuses. Recently, endoscopic surgery has been started to be used for the structures located behind the borders of paranasal sinuses.[6] In cases of epistaxis, challenging operations as internal maxillary artery ligation, repairs of cerebrospinal fluid leakage, orbital decompression and pituitary gland interventions can be performed endoscopically. As has been observed, transnasal interventions decrease morbidity and mortality rates when compared with transcranial procedures.[7] Knowledge about anatomical variations of sphenoid sinus and also its relationship with surrounding structures as internal carotid artery, optic nerve, pituitary gland will shorten sphenoid sinus surgery and also prevent morbid or mortal complications. ... |
5 |
Modern imaging of paranasal sinuses and the role of limited sinus computerized tomography: considerations of time, cost and radiation.
- MF
- 1994
(Show Context)
Citation Context ...ly, sphenoid sinus is asymmetrically divided in several compartments by one or more than one septum. Because of its location and close position to important anatomical structures, diagnosis and treatment of sphenoid sinus pathologies are very challenging.[1] Knowledge of the variations of this area is the key point for safe and harmless endoscopic surgery.[2] To be able to perform high quality and safe endoscopic surgery, preoperative planning with accurate diagnosis and under the guidance of imaging modalities as computed tomography (CT) and magnetic resonance imaging (MRI) is a prerequisite.[3] Many radiological techniques have been used for the visualization of sinuses. Conventional imaging technique has a historical value and nowadays it is replaced by CT and MRI. CT is the gold standard imaging modality in inflammatory paranasal sinus diseases and especially in candidates for endoscopic sinus surgery and postoperative recurrences. It is more sensitive than MRI in demonstrating bone tissue invasions. The most important disadvantage of CT which is also more cost-effective and practical than MRI, is ionizing radiation.[3] Depending on wide spectrum of anatomical variations of the sp... |
4 |
Sinusitis and its imaging in the pediatric population. Pediatr Radiol
- KA, WH
- 1997
(Show Context)
Citation Context ...f optic nerve and internal carotid artery were detected in 39 (17.8%) and 61 (27.9%) cases, respectively (Table 1). Discussion Sphenoid sinus is an important structure localized in the body of the sphenoid bone. It is separated from critical surrounding structures like optic nerve and chiasm, cavernous sinus, pituitary gland and internal carotid artery by a thin bony lamella. Sphenoid sinuses begin to develop from posterior ethmoidal cells at the age of 1 or 2. At 3-4 years of age, sphenoid sinuses extend towards sphenoid bone and grow into greater wings of sphenoid bone and pterygoid laminas.[5] High resolution CT scan may show pneumatization of the sphenoid sinuses as early as 2 years of age. Pneumatization progresses in an inferior and posterolateral direction. The pneumatized basi-sphenoid plate often extends to, but not past, the spheno-occipital synchondrosis in the mature sphenoid sinus. The sinus attains its mature size by the age of 14 years.[5] Functional endoscopic sinus surgery (ESS) has a wide area of application in the treatment of benign, malignant and inflammatory diseases of paranasal sinuses. Recently, endoscopic surgery has been started to be used for the structures... |
3 |
Chronic sinusitis. A medical or surgical disease? Otolaryngol Clin North Am
- DS
- 1996
(Show Context)
Citation Context ...andard imaging modality in inflammatory paranasal sinus diseases and especially in candidates for endoscopic sinus surgery and postoperative recurrences. It is more sensitive than MRI in demonstrating bone tissue invasions. The most important disadvantage of CT which is also more cost-effective and practical than MRI, is ionizing radiation.[3] This region demonstrates numerous variations which makes major vascular and glandular structures more vulnerable to traumatic injuries. For instance, hyperpneumatization of sphenoid sinus and posterior ethmoid sinuses predisposes to optic nerve injuries.[9] Intraluminal protrusion of internal carotid artery can even cause fatal complications.[10] Generally an asymmetrical septum which separates the sinus into two compartments is observed inside the sphenoid sinus. In various literature studies, the incidence of a single septum has been reported as 33-95 percent.[11] With a few specific exemplary cases the incidence of a single septum was reported as 77% (Szolar et al.)[12] and 71% (Hamid et al.),[13] while we found single septum (single complete+single incomplete) in 90.7% of our cases. These studies indicated that septa were mostly in the param... |
2 |
Pneumatization of the paranasal sinuses; normal features of importance to the accurate interpretation of CT scans and MR images.
- AJ, HR, et al.
- 1993
(Show Context)
Citation Context ... MRI, is ionizing radiation.[3] This region demonstrates numerous variations which makes major vascular and glandular structures more vulnerable to traumatic injuries. For instance, hyperpneumatization of sphenoid sinus and posterior ethmoid sinuses predisposes to optic nerve injuries.[9] Intraluminal protrusion of internal carotid artery can even cause fatal complications.[10] Generally an asymmetrical septum which separates the sinus into two compartments is observed inside the sphenoid sinus. In various literature studies, the incidence of a single septum has been reported as 33-95 percent.[11] With a few specific exemplary cases the incidence of a single septum was reported as 77% (Szolar et al.)[12] and 71% (Hamid et al.),[13] while we found single septum (single complete+single incomplete) in 90.7% of our cases. These studies indicated that septa were mostly in the paramedian location and more frequently deviated to the right side. In our study, 64% of single septum was in the midline and other types were localized immediately right or left side of the midline. In similar studies, Banna and Olutula,[14] and Hamid et al.[13] detected absence of sphenoid sinus septation in 11.4 and... |
2 |
The sphenoid sinus during childhood: Establishment of normal developmental standards by MRI. Surg Radiol Anat
- Szolar, Preidler, et al.
- 1994
(Show Context)
Citation Context ...landular structures more vulnerable to traumatic injuries. For instance, hyperpneumatization of sphenoid sinus and posterior ethmoid sinuses predisposes to optic nerve injuries.[9] Intraluminal protrusion of internal carotid artery can even cause fatal complications.[10] Generally an asymmetrical septum which separates the sinus into two compartments is observed inside the sphenoid sinus. In various literature studies, the incidence of a single septum has been reported as 33-95 percent.[11] With a few specific exemplary cases the incidence of a single septum was reported as 77% (Szolar et al.)[12] and 71% (Hamid et al.),[13] while we found single septum (single complete+single incomplete) in 90.7% of our cases. These studies indicated that septa were mostly in the paramedian location and more frequently deviated to the right side. In our study, 64% of single septum was in the midline and other types were localized immediately right or left side of the midline. In similar studies, Banna and Olutula,[14] and Hamid et al.[13] detected absence of sphenoid sinus septation in 11.4 and 10.8% of their cases, respectively. In our study, we observed lower rate (2.2%) relative to those reported i... |
1 |
Colquhoun IC. Cross CT protocol for endoscopic sinus surgery.
- Rowe-Jones, Mackay
- 1995
(Show Context)
Citation Context ... April 2014 Radiological evaluation of septal bone variations in the sphenoid sinus 7 Sphenoid sinus is an important structure localized in the body of the sphenoid bone. It is separated from critical surrounding structures like optic nerve and chiasm, cavernous sinus, pituitary gland and internal carotid artery by a thin bony lamella. Generally, sphenoid sinus is asymmetrically divided in several compartments by one or more than one septum. Because of its location and close position to important anatomical structures, diagnosis and treatment of sphenoid sinus pathologies are very challenging.[1] Knowledge of the variations of this area is the key point for safe and harmless endoscopic surgery.[2] To be able to perform high quality and safe endoscopic surgery, preoperative planning with accurate diagnosis and under the guidance of imaging modalities as computed tomography (CT) and magnetic resonance imaging (MRI) is a prerequisite.[3] Many radiological techniques have been used for the visualization of sinuses. Conventional imaging technique has a historical value and nowadays it is replaced by CT and MRI. CT is the gold standard imaging modality in inflammatory paranasal sinus diseas... |
1 |
Endoscopic anatomy of the sphenoid sinus.
- Elwany, Elsae›d, et al.
- 1999
(Show Context)
Citation Context ...by CT and MRI. CT is the gold standard imaging modality in inflammatory paranasal sinus diseases and especially in candidates for endoscopic sinus surgery and postoperative recurrences. It is more sensitive than MRI in demonstrating bone tissue invasions. The most important disadvantage of CT which is also more cost-effective and practical than MRI, is ionizing radiation.[3] Depending on wide spectrum of anatomical variations of the sphenoid sinus, in endoscopic interventions devoid of navigation systems, knowledge about the orientation and the number of the sinuses is a must for safe surgery.[4] In our study we also investigated especially variations of the sphenoid sinus. We aimed to expose sphenoid sinus septations, in order to determine septal variations and rates of intrasinusal protrusions of optic nerve (ON) and internal carotid artery (ICA) which might lead to major complications in cases of exposure to surgical trauma. Materials and Methods Retrospective analysis of spiral tomographic CT (Aquilion 16 CFX; Toshiba Medical System, Tokyo, Japan) scanning of paranasal sinuses of 218 patients (117 male and 101 female) who consulted to Mardin Government Hospital with complaints of ... |
1 |
Paranazal sinüs infeksiyonlar›nda ostiomeatal kompleksteki anatomik varyasyonlar.
- Dursun, Korkmaz, et al.
- 1998
(Show Context)
Citation Context ...rgery (ESS) has a wide area of application in the treatment of benign, malignant and inflammatory diseases of paranasal sinuses. Recently, endoscopic surgery has been started to be used for the structures located behind the borders of paranasal sinuses.[6] In cases of epistaxis, challenging operations as internal maxillary artery ligation, repairs of cerebrospinal fluid leakage, orbital decompression and pituitary gland interventions can be performed endoscopically. As has been observed, transnasal interventions decrease morbidity and mortality rates when compared with transcranial procedures.[7] Knowledge about anatomical variations of sphenoid sinus and also its relationship with surrounding structures as internal carotid artery, optic nerve, pituitary gland will shorten sphenoid sinus surgery and also prevent morbid or mortal complications. Determination of anatomical variations of this region will be the keypoint in the understanding of the steps of tumoral invasion or spread of inflammatory process. Besides it will guide the management of the relevant pathologies.[8] Many radiological techniques have been used for the visualization of sinuses. Conventional imaging technique has a... |
1 |
Rinosinüzitli hastalarda fonksiyonel endoskopik sinüs cerrahisinin boyutlar›n›n BT ile belirleme-varyasyon ve patolojilerin s›kl›¤› KBB Ihtis Derg
- Erkan, Külekçi, et al.
- 1994
(Show Context)
Citation Context ...served, transnasal interventions decrease morbidity and mortality rates when compared with transcranial procedures.[7] Knowledge about anatomical variations of sphenoid sinus and also its relationship with surrounding structures as internal carotid artery, optic nerve, pituitary gland will shorten sphenoid sinus surgery and also prevent morbid or mortal complications. Determination of anatomical variations of this region will be the keypoint in the understanding of the steps of tumoral invasion or spread of inflammatory process. Besides it will guide the management of the relevant pathologies.[8] Many radiological techniques have been used for the visualization of sinuses. Conventional imaging technique has a historical value and nowadays it is replaced by CT and MRI. CT is the gold standard imaging modality in inflammatory paranasal sinus diseases and especially in candidates for endoscopic sinus surgery and postoperative recurrences. It is more sensitive than MRI in demonstrating bone tissue invasions. The most important disadvantage of CT which is also more cost-effective and practical than MRI, is ionizing radiation.[3] This region demonstrates numerous variations which makes majo... |
1 |
Enflamatuar paranazal sinüs patolojilerinin de¤erlendirilmesinde Waters grafisi ve s›n›rl› sinüs bilgisayarl› tomografisinin tan› de¤eri.
- Tarhan, AV, et al.
- 1998
(Show Context)
Citation Context ...tes for endoscopic sinus surgery and postoperative recurrences. It is more sensitive than MRI in demonstrating bone tissue invasions. The most important disadvantage of CT which is also more cost-effective and practical than MRI, is ionizing radiation.[3] This region demonstrates numerous variations which makes major vascular and glandular structures more vulnerable to traumatic injuries. For instance, hyperpneumatization of sphenoid sinus and posterior ethmoid sinuses predisposes to optic nerve injuries.[9] Intraluminal protrusion of internal carotid artery can even cause fatal complications.[10] Generally an asymmetrical septum which separates the sinus into two compartments is observed inside the sphenoid sinus. In various literature studies, the incidence of a single septum has been reported as 33-95 percent.[11] With a few specific exemplary cases the incidence of a single septum was reported as 77% (Szolar et al.)[12] and 71% (Hamid et al.),[13] while we found single septum (single complete+single incomplete) in 90.7% of our cases. These studies indicated that septa were mostly in the paramedian location and more frequently deviated to the right side. In our study, 64% of single ... |