Computed Tomography of Tumors of the Sphenoid Sinus and Bone

2015 ◽  
pp. 39-41
Author(s):  
Robert A. Zimmerman ◽  
Larissa T. Bilaniuk
Keyword(s):  
Computed Tomography ◽  
Sphenoid Sinus

Quantitative Computer-Aided Computed Tomography Analysis of Sphenoid Sinus Anatomical Relationships

2004 ◽  
Vol 18 (3) ◽  
pp. 173-178 ◽  
Author(s):  
Martin J. Citardi ◽  
Ryan P. Gallivan ◽  
Pete S. Batra ◽  
Calvin R. Maurer ◽  
Torsten Rohlfing ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sphenoid Sinus ◽  
Computer Aided ◽  
Tomography Analysis

scholarly journals Post-mortem X-ray computed tomography (PMCT) identification using ante-mortem CT-scan of the sphenoid sinus

2019 ◽  
Vol 46 (4) ◽  
pp. 248-255 ◽  
Author(s):  
Lucile Deloire ◽  
Idris Diallo ◽  
Romain Cadieu ◽  
Mathieu Auffret ◽  
Zarrin Alavi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Sphenoid Sinus ◽  
Post Mortem ◽  
X Ray ◽  
X Ray Computed

Computed Tomography Anatomy of the Optic Canal

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P74-P74 ◽  
Author(s):  
Catherine K Hart ◽  
Lee A Zimmer
Keyword(s):  
Computed Tomography ◽  
Optic Nerve ◽  
Sphenoid Sinus ◽  
Optic Canal ◽  
Canal Wall ◽  
Nerve Decompression ◽  
Computed Tomography Images ◽  
Optic Nerve Decompression ◽  
Wide Range ◽  
Potential Area

Objective (1) Analyze the radiographic anatomy of the optic canal in relationship to the sphenoid sinus. (2) Understand the role variation in optic canal anatomy may have in the variability of outcomes in optic nerve decompression. Methods Fine cut computed tomography images of the sinuses were obtained with an IRB waiver. Optic canal dimensions were measured on sinus computed tomography images of 96 patients. 191 optic canals were analyzed (111 females, 80 males). Student T-test calculations were performed for statistical analysis on computer software. Results The average medial canal wall length was 1.48 centimeters (range 0.7–2.3). The length in males was 1.61 centimeters (1.1–2.3) as compared to 1.39 centimeters (0.7–2.0) in females (p=8.0–7). The average degree of exposure of the optic canal exposed to the sphenoid sinus was 101.3 degrees (56–176). The degree of exposure was 105.6 in males versus 98.2 in females (p=.01). The potential area of canal exposed to the sphenoid sinus was 0.66 centimeters squared or 28% of the total surface area. The potential area exposed to the sphenoid sinus in males was 0.76cm2 (28%) and 0.58 centimeters squared (27%) in females. Conclusions A wide range in medial canal wall length and exposure of the bony optic canal to the sphenoid sinus exists on CT images. The variation in medial canal wall length and in optic canal exposure to the sphenoid sinus may contribute to the variability in success rates of endoscopic optic nerve decompression for optic neuropathy.

Sphenoid sinus mucocele: 10 cases and literature review

2009 ◽  
Vol 124 (1) ◽  
pp. 44-47 ◽  
Author(s):  
S R Soon ◽  
C M Lim ◽  
H Singh ◽  
D S Sethi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Endoscopic Sinus Surgery ◽  
Sphenoid Sinus ◽  
Sinus Surgery ◽  
Nasal Discharge ◽  
Resonance Imaging ◽  
Presenting Symptoms ◽  
Singapore General Hospital

AbstractIntroduction:Sphenoid sinus mucoceles represent only 1–2 per cent of all paranasal sinus mucoceles. Patients may present with a myriad of symptoms. Pre-operative investigations include nasoendoscopy, computed tomography and/or magnetic resonance imaging. Treatment is by endoscopic sinus surgery.Methodology:A retrospective review of the archives of the Singapore General Hospital otolaryngology department (1999–2006) identified 10 cases of sphenoid sinus mucocele. Patient demographics, presenting symptoms, investigations and treatment were evaluated.Results:The 10 patients identified (three women and seven men) had a mean age of 54.5 years (range 24–70 years). Thirty per cent of patients had a history of nasopharyngeal carcinoma treated with radiotherapy. Presenting symptoms, in order of decreasing frequency, were: ocular symptoms (50 per cent), headaches (30 per cent), nasal discharge (30 per cent) and facial pain (10 per cent). All patients underwent pre-operative computed tomography or magnetic resonance imaging. Twenty per cent of patients had evidence of intracranial involvement on imaging. All patients underwent uncomplicated transnasal sphenoidotomy and drainage of the mucocele. There was no clinical or radiological evidence of recurrence at a mean follow up of 29 months (range 4–90 months).Conclusion:Sphenoid sinus mucocele is a rare condition. In this study, radiation to the head and neck appeared to be a predisposing factor, and eye symptoms were the commonest presentation. Endoscopic sinus surgery is a safe and effective treatment modality.

EVALUATION OF VARIATIONS IN SPHENOID SINUS PNEUMATIZATION USING MULTIDETECTOR COMPUTED TOMOGRAPHY IN PATIENTS ATTENDING TERTIARY CARE HOSPITAL, VISAKHAPATNAM

2021 ◽  
pp. 62-65
Author(s):  
Sonica Sharma ◽  
Bhamidipaty Kanaka Durgaprasad ◽  
Payala Vijayalakshmi
Keyword(s):  
Computed Tomography ◽  
Paranasal Sinuses ◽  
Sphenoid Sinus ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Ct Images ◽  
Care Hospital ◽  
Anterior Clinoid Process ◽  
Anterior Extension ◽  
Sphenoid Sinuses

BACKGROUND: The purpose of our study was to assess the prevalence of different patterns of pneumatization in the sphenoid sinuses as detected on the computed tomography (CT) images of paranasal sinuses of the patients presenting with various pathologies. This is a retrospective radiological study of CT im MATERIALS AND METHODS: ages of paranasal sinuses, done at Radio diagnosis department of a Tertiary care hospital. The study comprised CT images of 500 patients in the age range of 18-75years who were referred for CT scan of paranasal sinuses for various pathologies between the period of July 2018 and July 2019. All images of paranasal sinuses had been acquired following a standardized protocol in axial plane. Their reconstructed images in axial, coronal and sagittal planes were evaluated, using Osirix software, for the extent and different patterns of sphenoid sinus pneumatization. The Images of sphenoid sinuses were assessed for the posterior, lateral and anterior extension of their pneumatization The sphenoid sinuses pneumatization patterns in the RESULTS: descending order of prevalence were complete sellar (75.0%), incomplete sellar (22.6%), presellar (2.4%) and conchal (0%). The clival extensions was seen in 75% of patients and lateral extension sides in 49.1% patients. Lateral recesses as assessed on coronal images was seen in 49.1 % of cases with the prevalence in descending order being extension into pterygoid process 59.8 %, greater wing of sphenoid 9.2 %, full lateral 41% and lesser wing (anterior clinoid process) 19.3%. The pure forms were relatively less common and combined forms being more common. A preoperative review of the sphenoid anatomy should allow for safer endo

Relation between optic and carotid canals with sphenoid sinus in patients with communicant hydrocephalus: a computed tomography evaluation study

2020 ◽  
Vol 61 (8) ◽  
pp. 1064-1071
Author(s):  
Ziya Şencan ◽  
Nuray Bayar Muluk ◽  
Yunus Yilmazsoy ◽  
Adnan Özdemir ◽  
Havva Meltem Mutlucan
Keyword(s):  
Computed Tomography ◽  
Sphenoid Sinus ◽  
Optic Canal ◽  
Cranial Computed Tomography ◽  
Control Group ◽  
Group Type ◽  
Carotid Canal ◽  
Adjacent Structures ◽  
Positive Correlations ◽  
Type 3

Background There are neuro-ophthalmologic findings in patients with communicant hydrocephalus (CH). Purpose To investigate the relationships of the optic canal and carotid canal classifications at sphenoid sinus and anterior clinoid process (ACP) pneumatization in patients with CH. Material and Methods In this multicentric retrospective cross-sectional study, the cranial computed tomography (CT) images of 38 patients with CH (20 men, 18 women) and 40 controls (25 men, 15 women) were included. Optic and carotid canal classification at sphenoid sinus, ACP pneumatization, and sphenoid sinus septation were evaluated. Results In the CH group, type 3 optic canal was detected in 21.1% of the patients and type 4 optic canal was detected in 2.6% of the patients on the left side which was significantly different from the control group ( P<0.05). In the CH group, type 3 carotid canal was detected in 21.1% of the patients (left) and 18.4% of the patients (right). ACP pneumatization was present in 13.2% of the patients in the CH group bilaterally. There were positive correlations between optic canal classifications and ACP pneumatization ( P<0.05). There were also positive correlations between the right and left carotid canal classifications and ACP pneumatization ( P<0.05). Conclusion To avoid complications, CT should be evaluated carefully in patients with CH before surgical interventions in sphenoid sinuses and surgeons should work carefully in the sphenoid sinus or adjacent structures. The protrusion possibility of the optic canal or carotid canal to the sphenoid sinus may be higher in pneumatized ACP patients.

scholarly journals The Significance of Magnetic Resonance Imaging and Computed Tomography Findings in Sphenoid Sinus Agenesis

2014 ◽  
Vol 93 (2) ◽  
pp. 71-74 ◽  
Author(s):  
Lokman Uzun ◽  
Omer Faik Sagun ◽  
Bulent Seferoglu ◽  
Omer Etlik ◽  
Kamran Mahmutyazicioglu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Sphenoid Sinus ◽  
Resonance Imaging

Isolated Inflammatory Sphenoid Sinus Disease: A Revisitation of Computed Tomography Indications based on Presenting Findings

2005 ◽  
Vol 19 (6) ◽  
pp. 627-632 ◽  
Author(s):  
Young H. An ◽  
Giridhar Venkatraman ◽  
John M. DelGaudio
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Sphenoid Sinus ◽  
Disease Process ◽  
Retrospective Chart Review ◽  
Neurological Complications ◽  
Common Finding ◽  
Sinus Disease ◽  
Presenting Symptoms ◽  
Ct Evaluation

Background Isolated inflammatory sphenoid sinus disease (IISSD) can be difficult to diagnose. Frequently, history and physical are inadequate in establishing a diagnosis. Computed tomography (CT) is an excellent screening tool; however, it often is obtained late in the disease process because of vague symptoms at presentation. Identifying the most common presenting symptoms of IISSD may allow earlier detection and avoidance of more severe sequelae by determining earlier indications for CT. Presently, headache is not an indication for sinus CT. Methods A retrospective chart review of IISSD presentation was performed at our institution. A literature review was performed also to quantitatively document trends in presentation of IISSD, including characterization of headache symptoms by location. Cumulative findings were then compared with current CT indications to determine if presentation patterns warrant a change in indications for CT. Results A total of 361 cases were evaluated by our inclusion criteria. Headache was the most common finding (81.7%), particularly peri/retro-orbital, vertex, and frontal headache. Ocular changes (17.5%) and cranial nerve involvement (16.1%) were common also, but headache frequently was a solitary finding (42.6%). Twenty-six IISSD cases were reviewed at our institution over 7 years, with similar results. Under current guidelines, the only IISSD findings that are indications for CT scan are the ophthalmologic and neurological complications. Conclusion Not every headache necessitates a CT scan. However, the deep-seated vertex, frontal, and, particularly, peri/ retro-orbital headaches, especially when aggravated by head movement and refractory to analgesics, as is often seen in IISSD, should be an indication for CT evaluation. (American Journal of Rhinology 19, 627–632, 2005)

Mucocele of the sphenoid sinus: a rare entity to keep in mind

2019 ◽  
Vol 8 (2) ◽  
pp. 1-5
Author(s):  
Marrakchi jihene ◽  
Mejbri Maha ◽  
Sana Mahfoudhi ◽  
Besbes Ghazi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Surgical Management ◽  
Sphenoid Sinus ◽  
Diagnosis And Treatment ◽  
Rare Entity ◽  
Resonance Imaging ◽  
Computed Tomography Scan ◽  
Tomography Scan

Isolated sphenoid sinus mucocele (SSM) is a rare entity that can result in serious sequelae if diagnosis and treatment are inappropriately delayed. Typically, mucoceles are asymptomatic, and they are accidentally identified after computed tomography scan or magnetic resonance imaging of the maxillofacial area performed for other pathologic issues. We report a case of isolated SSM that only presented with headache for over a year, and also review the literature regarding surgical management of such entity.

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