Anatomical variations of sinonasal region: a CT scan study

Thimmappa, T. D.; Amith, P.; Murthy, Nagaraj; Harsha, K. N.; Gangadhar, Kiran; Azeem, Abdul

doi:10.5455/2320-6012.ijrms20141137

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…Similar finding was also noted in studies done by Bolger et al (40%), Babble RW et al (40%), Earwaker et al (44%), Dua K et al (44%), Thimmappa TD et al (47%), Vijay Prabhu et al (48%) where DNS was the most common anatomical variation. 11,12,[18][19][20][21] Concha bullosa was the second common anatomical variation which was seen in 33.6% patients which can be comparable with studies done by Vijay prabhu et al (28%) Asruddin et al (28%), Shroff et al (33%), Zinreich SJ et al (34%), Thimmappa TD et al (37%). In literature, the occurrence of concha bullosa varied between 16 -53%.…”

Section: Discussionsupporting

confidence: 71%

Computed tomographic evaluation of inflammatory sinonasal diseases

Kandukuri

Phatak

2017

Int J Res Med Sci

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Background: Computed Tomography plays a major diagnostic role in patients with inflammatory sinonasal diseases and determines the mode of management by displaying the complex osteomeatal anatomy, determining anatomical variations, extent of disease and characterizing various inflammatory sinonasal diseases. Purpose of the study was to assess the role of CT in evaluation of inflammatory sinonasal diseases by evaluating the sensitivity and specificity of CT in diagnosis of various inflammatory Sinonasal diseases.Methods: In this hospital based prospective study 122 patients with symptomatic inflammatory sinonasal diseases were evaluated by 16 slice MDCT. CT diagnosis is correlated with final diagnosis obtained from findings of nasal endoscopy/Functional Endoscopic Sinus Surgery, histopathological examination and fungal culture. Statistical analysis was done by descriptive and inferential statistics using Test statistics (sensitivity, specificity, PPV, NPV and accuracy) and Z test for single proportions (Z value >1.96 is considered significant). Software used in the analysis was SPSS 17.0 version and graph pad prism 6.0 version and p <0.05 is considered as level of significance.Results: On correlating CT diagnosis with final diagnosis, Chronic Sinusitis had 98.41% sensitivity and 96.61% specificity, fungal sinusitis had 66.67% sensitivity and specificity 99.14%, polyps had sensitivity of 94.59% and specificity of 97.6%, the rest of the inflammatory conditions had sensitivity 93.7 % and 99% specificity. P value in all instances was <0.05, i.e. <0.0001, indicating the significance of the findings.Conclusions: CT is the diagnostic modality of choice in evaluation of various inflammatory pathologies and associated complications thereby planning the further management of the patient.

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Section: Discussionsupporting

confidence: 71%

Computed tomographic evaluation of inflammatory sinonasal diseases

Kandukuri

Phatak

2017

Int J Res Med Sci

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“…The angle formed is calculated. 7 Other commonly observed sinonasal anatomical variations along with the findings of this study are tabulated in Table 2 for comparison. There is a strong consensus that knowledge of sinonasal anatomy and its variations is essential for safe and effective FESS or other skull base surgeries.…”

Section: Discussionmentioning

confidence: 99%

“…[4][5][6]8 Studies demonstrate that their major dimensions are correlated with frontal sinus diseases and lacrimation. 7 All the subjects in the study had discharge in the frontal sinus.…”

Section: Discussionmentioning

confidence: 99%

“…7 FESS requires a thorough knowledge of anatomy of the paranasal sinuses of the individual who is undergoing the procedure in order to prevent injury to the vital structures present around the osteomeatal complex. Since anatomical variations are common in any population and this variation is often ethnic based on genetic and environmental factors.…”

Section: Discussionmentioning

confidence: 99%

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Incidence of sinonasal anatomical variations associated with chronic sinusitis by CT scan in Karaikal, South India

Gouripur

Kumar

Janagond

et al. 2017

Int J Otorhinolaryngol Head Neck Surg

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Background: Variations in sinonasal anatomy of adults are common and vary among different populations. Their role in development of pathological conditions such as sinusitis, epistaxis, etc is debated. Having clear picture of sinonasal anatomy of a person is essential in avoidance of complications during surgery. This study was done to analyze sinonasal anatomy in adults from Karaikal region having chronic sinusitis by nasal endoscopy and CT scan imaging.Methods: A total of 50 patients undergoing endoscopic sinus surgery were studied by preoperative nasal endoscopy, CT scanning and endoscopy at the time of definitive surgery and variations recorded and analyzed. Results: The incidence of the sinonasal anatomical variations in CT scan study were – discharge in the frontal sinus (100%), agger nasi cells (96%), deviated nasal septum (70%), anterior ethmoidal cells (86%), posterior ethmoidal cells (58%), sinus lateralis (52%), frontal cells (50%), discharge in sphenoid sinus (50%), pneumatised superior turbinate (46%), INSA (34%), prominent bulla ethmoidalis (30%), supra orbital cells (26%), pneumatised septum(16%), medialised uncinate process (16%), paradoxical middle turbinate (16%), Haller cells (14%), supreme turbinate (14%), pneumatised inferior turbinate (12%), frontal recess obliteration (12%), absent pneumatisation of frontal sinus (12%), pneumatised middle turbinate (10%), Onodi cells (6%), pneumatised uncinate process (2%), maxillary sinus septation (2%).Conclusions: The high incidence of variations emphasises the need for proper preoperative assessment for safe and effective endoscopic sinus surgery.

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“…Different ratios of the SCG incidences were found in the previous studies (Al-Qudah (2010) 31/110 (28 %), Thimmappa et al (2014) 28/100 (28 %), Manea & Mladina (2016) 59/196 (30.1 %), Kaygusuz et al (2014) 13/65 (20 %), Mladina et al 198/527 (37.5 %). In the study of Som et al, the incidence of SCG in adults was found to be 26/200 (13 %), while the incidence of SCG in pediatric group (7-12 years of age) was 4/79.…”

Section: Resultsmentioning

confidence: 70%

The Incidence of Sinus Crista Galli in Children and Adults. A Computerized Tomography Study

Metin-Tellioglu

Polat

2019

Int. J. Morphol.

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METIN, T. A. & POLAT, Y.The incidence of sinus crista galli in children and adults. A computerized tomography study. Int. J. Morphol., 37(2):735-738, 2019. SUMMARY:The pneumatization area in the crista galli region of the ethmoid bone can be called Sinus Crista Galli (SCG). The authors would like to recommend the terminology as sinus crista galli for pneumatized crista galli. Our aims in this study are to determine SCG on three dimensional Computerized Tomography (CT) images, to investigate its frequency, dimension and to emphasize their clinical significance in children and adults. A total of 360 adult images (160 female, 200 male) and 68(43 female, 25 male) pediatric images were examined. The presence SCG was recorded with axial and coronal paranasal sinus CT images. The height, width, anterposterior diameter of the sinus was measured. All the data we obtained from this study were analyzed using the SPSS 18.0 program. Descriptive statistics are shown as mean ± Sdt. Sinus crista galli was found in 17 examined images of the 360 (4.72 %) in adult group. Chronic pansinusitis was detected in 7 of 17 cases. Frontal sinusitis findings were detected in 7 cases. Sinusitis was not observed in 3 cases. The incidence of SCG was found in 4 pediatric images out of 68 (5.88 %). In 1 out of 4 cases, infection was detected in SCG. We did not observe SCG in the pediatric group with 0-7 years of age. Sinus crista galli was found at low rates in adult and pediatric age group. However; relationship was found between these variation and chronic rhinosinusitis. Additionally, detection of SCG in paranasal sinus CT can be provided better results and reduce complications in anterior cranial fossa surgery.

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Anatomical variations of sinonasal region: a CT scan study

Cited by 9 publications

References 12 publications

Computed tomographic evaluation of inflammatory sinonasal diseases

Computed tomographic evaluation of inflammatory sinonasal diseases

Incidence of sinonasal anatomical variations associated with chronic sinusitis by CT scan in Karaikal, South India

The Incidence of Sinus Crista Galli in Children and Adults. A Computerized Tomography Study

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