Preoperative Study of Computed Tomography Scans in Endoscopic Sinus Surgery

Skull Base ◽  
2009 ◽  
Vol 19 (S 02) ◽  
Author(s):  
T.F. Terzis
Keyword(s):  
Computed Tomography ◽  
Endoscopic Sinus Surgery ◽  
Sinus Surgery ◽  
Computed Tomography Scans

scholarly journals Tomographical Findings in Adult Patients Undergoing Endoscopic Sinus Surgery Revision

2017 ◽  
Vol 22 (01) ◽  
pp. 073-080
Author(s):  
Jan Socher ◽  
Jonas Mello ◽  
Barbara Baltha
Keyword(s):  
Computed Tomography ◽  
Endoscopic Sinus Surgery ◽  
Middle Turbinate ◽  
Adult Patients ◽  
Sinus Surgery ◽  
Primary Surgery ◽  
Computed Tomography Scans ◽  
Revision Sinus Surgery ◽  
The City ◽  
Mucosal Thickening

Introduction Many patients undergoing functional endoscopic sinus surgery still have an uncontrolled clinical disease in the late post-operative period. Up to 11.4% of the patients will require a revision surgery. Findings such as the residual uncinated process and the lateralization of the middle turbinate were considered by some studies as being responsible for failure in the primary surgery. Objectives To describe the tomographical findings in adult patients undergoing revision endoscopic sinus surgery, the profile of those patients, and verify the mucosal thickening level of the paranasal sinus. Methods Data were collected from medical records and computed tomography reports of 28 patients undergoing revision sinus surgery on a private service in the city of Blumenau between 2007 and 2014. The score of Lund-Mackay was used to verify the mucosal thickening level. Results Among the 28 patients, 23 were reoperated once, 3 were reoperated twice, and 2 were reoperated 3 times. The most relevant findings were mucosal thickening of the maxillary sinus (89.28%), deviated septum (75%), thickening of the ethmoid (50%) and sphenoidal sinuses (39.28%), and pneumatization of the middle turbinate (39.28%). The average obtained in the Lund-Mackay score was 5.71, with most patients classified in the lower range of punctuation. Conclusion The analysis of the computed tomography scans showed persistent structures that may be responsible for the failure of the primary surgery. Computed tomography is a useful tool to plan the surgery and quantify the post-operative success.

Functional Endoscopic Sinus Surgery in Patients with Normal Computed Tomography Scans

1994 ◽  
Vol 110 (6) ◽  
pp. 505-509 ◽  
Author(s):  
Paul R. Cook ◽  
Gary J. Nishioka ◽  
William E. Davis ◽  
Joel P. McKinsey
Keyword(s):  
Computed Tomography ◽  
Endoscopic Sinus Surgery ◽  
Facial Pain ◽  
Functional Endoscopic Sinus Surgery ◽  
Sinus Surgery ◽  
Select Group ◽  
Computed Tomography Scans ◽  
The Impact ◽  
Tomography Scan

Eighteen patients were operated on by functional endoscopic sinus surgery who had no ostiomeatal unit obstruction on computed tomography scan and had unremarkable paranasal sinuses. These patients also had no apparent ostiomeatal unit obstruction on diagnostic nasal endoscopy. Data were collected on these patients regarding the impact of very limited functional endoscopic sinus surgery on their principal complaint of recurrent sinusitis with facial pain/headache thought to be of sinogenic origin. Sixteen patients (88.9%) had a reduction in the number of sinus infections requiring antibiotic therapy. This reduction was significant at p < 0.0001. Twelve of 14 patients whose facial pain/headache was believed to be of sinogenic origin had a significant reduction in severity (95% confidence interval, 49.2% to 95.3%). We discuss the role of reversible nasal mucosal disease in the pathophysiology of recurrent rhinosinusifts in this patient population. This was a very small, select group of patients who had specific complaints and had had medical treatment failures. This therapy Is not recommended for every patient, but only a select few with classic complaints of sinus headaches or recurrent sinusitis and negative computed tomography scans.

scholarly journals Endoscopic Visualization of the True Maxillary Ostium Following Uncinectomy

2019 ◽  
Vol 99 (6) ◽  
pp. 384-387 ◽  
Author(s):  
Omar H. Ahmed ◽  
Marissa P. Lafer ◽  
Ilana Bandler ◽  
Elcin Zan ◽  
Binhuan Wang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Retrospective Study ◽  
Chronic Rhinosinusitis ◽  
Study Design ◽  
Endoscopic Sinus Surgery ◽  
Nasolacrimal Duct ◽  
Sinus Surgery ◽  
Academic Hospital ◽  
Preoperative Ct

Objectives: To examine the frequency in which angled endoscopes are necessary to visualize the true maxillary ostium (TMO) following uncinectomy and prior to maxillary antrostomy. Additionally, to identify preoperative computed tomography (CT) measures that predict need for an angled endoscope to visualize the TMO. Study Design: Retrospective study. Setting: Tertiary academic hospital. Patients and Methods: Patients who underwent endoscopic sinus surgery (ESS) between December of 2017 and August of 2018 were retrospectively identified. Cases were reviewed if they were primary ESS cases for chronic rhinosinusitis without polyposis and if they were at least 18 years of age. Results: Sixty-three maxillary antrostomies were reviewed (82.5% were from bilateral cases). Thirty-five cases (55.6%) required an angled endoscope in order to visualize the TMO. Of the preoperative CT measures examined, a smaller sphenoid keel-caudal septum-nasolacrimal duct (SK-CS-NL) angle was significantly associated with need for an angled endoscope intraoperatively to visualize the TMO (17.1° SD ± 3.2 vs 15.0° SD ± 2.9; P = .010). Conclusion: Angled endoscopes are likely required in the majority of maxillary antrostomies to visualize the TMO. This is important to recognize in order to prevent iatrogenic recirculation. The SK-CS-NL angle may help to identify cases preoperatively which require an angled endoscope to identify the TMO during surgery.

scholarly journals Correlations and Comparison between Repeat Computed Tomography Scores, Endoscopy Scores and Symptomatic Improvement before and after Endoscopic Sinus Surgery: A Pilot Study

2013 ◽  
Vol 6 (1) ◽  
pp. 32-40 ◽  
Author(s):  
NV Deepthi ◽  
Indudharan R Menon
Keyword(s):  
Computed Tomography ◽  
Pilot Study ◽  
Endoscopic Sinus Surgery ◽  
Medical Center ◽  
Tertiary Care ◽  
Objective Evaluation ◽  
Symptomatic Improvement ◽  
Sinus Surgery ◽  
Tertiary Care Medical Center ◽  
Before And After

ABSTRACT Background Chronic rhinosinusitis (CRS) is diagnosed on the basis of symptoms, nasal endoscopic findings and computed tomography of the paranasal sinuses (CT PNS). Where indicated, functional endoscopic sinus surgery (FESS) is the surgical treatment. Objective To determine correlations between subjective symptom severity and objective endoscopic and radiologic findings in CRS and to compare these before and after FESS. Materials and methods Analysis of prospectively collected data of 20 patients undergoing FESS at a tertiary care medical center followed up for a minimum period of 6 months after surgery. RSI questionnaire-based symptom score, Lund-Mackay system-based endoscopic and CT finding scores were recorded preoperatively and at 8 weeks and 6 months postoperatively. Results Significant positive correlation was noted between the three parameters before surgery, especially endoscopic and radiological scores (r = 0.94 in the latter, p < 0.01 in all three). Postoperative improvement was statistically significant for all three parameters, even at the 6 months stage (p < 0.001). Postoperative correlations reduced significantly, especially between endoscopic and radiological scores. Conclusion This study showed the relevance of objective evaluation of routine parameters of CRS, preoperatively. It also confirmed the usefulness of FESS in indicated cases, in terms of statistical improvement of these parameters. However, repeat CT scans and the methods of scoring used by us may not be equally applicable in the long-term postoperative scenario. How to cite this article Deepthi NV, Menon UK, Menon IR. Correlations and Comparison between Repeat Computed Tomography Scores, Endoscopy Scores and Symptomatic Improvement before and after Endoscopic Sinus Surgery: A Pilot Study. Clin Rhinol An Int J 2013;6(1):32-40.

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.

scholarly journals A 16-Year Study on Incidence and Progression of Diseased Sphenoethmoidal (Onodi) Cell

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Ethan I. Huang ◽  
Chia-Ling Kuo ◽  
Li-Wen Lee
Keyword(s):  
Computed Tomography ◽  
Decision Making ◽  
Optic Nerve ◽  
Endoscopic Sinus Surgery ◽  
Visual Loss ◽  
Sinus Surgery ◽  
Acute Visual Loss ◽  
Computed Tomography Images ◽  
Onodi Cell

Traumatic operative injury of the optic nerve in an endoscopic sinus surgery may cause immediate or delayed blindness. It should be cautioned when operating in a sphenoethmoidal cell, or known as Onodi cell, with contact or bulge of the optic canal. It remains unclear how frequent progression to visual loss occurs and how long it progresses to visual loss because of a diseased sphenoethmoidal cell. Research to discuss these questions is expected to help decision making to treat diseased sphenoethmoidal cells. From July 2001 to June 2017, 216 patients received conservative endoscopic sinus surgery without opening a diseased sphenoethmoidal cell. We used their computed tomography images of paranasal sinuses to identify diseased sphenoethmoidal cells that could be associated with progression to visual loss. Among the 216 patients, 52.3% had at least one sphenoethmoidal cell, and 14.8% developed at least one diseased sphenoethmoidal cell. One patient developed acute visual loss 4412 days after the first computed tomography. Our results show that over half of the patients have a sphenoethmoidal cell but suggest a rare incidence of a diseased sphenoethmoidal cell progressing to visual loss during the follow-up period.

An artificial intelligence algorithm that differentiates anterior ethmoidal artery location on sinus computed tomography scans

2019 ◽  
Vol 134 (1) ◽  
pp. 52-55 ◽  
Author(s):  
J Huang ◽  
A-R Habib ◽  
D Mendis ◽  
J Chong ◽  
M Smith ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Intelligence ◽  
Computed Tomography ◽  
Neural Networks ◽  
Convolutional Neural Network ◽  
Convolutional Neural Networks ◽  
Sinus Surgery ◽  
Computed Tomography Scans ◽  
Ethmoidal Artery ◽  
Anterior Ethmoidal Artery

AbstractObjectiveDeep learning using convolutional neural networks represents a form of artificial intelligence where computers recognise patterns and make predictions based upon provided datasets. This study aimed to determine if a convolutional neural network could be trained to differentiate the location of the anterior ethmoidal artery as either adhered to the skull base or within a bone ‘mesentery’ on sinus computed tomography scans.MethodsCoronal sinus computed tomography scans were reviewed by two otolaryngology residents for anterior ethmoidal artery location and used as data for the Google Inception-V3 convolutional neural network base. The classification layer of Inception-V3 was retrained in Python (programming language software) using a transfer learning method to interpret the computed tomography images.ResultsA total of 675 images from 388 patients were used to train the convolutional neural network. A further 197 unique images were used to test the algorithm; this yielded a total accuracy of 82.7 per cent (95 per cent confidence interval = 77.7–87.8), kappa statistic of 0.62 and area under the curve of 0.86.ConclusionConvolutional neural networks demonstrate promise in identifying clinically important structures in functional endoscopic sinus surgery, such as anterior ethmoidal artery location on pre-operative sinus computed tomography.

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