A study of paranasal sinuses by computed tomography for etiopathological distribution and anatomical variants

2020 ◽  
Vol 14 (2) ◽  
pp. 32-35
Author(s):  
Parag Vijaysingh Patil ◽  
◽  
Rajshree Uttam Dhadve ◽  
Vinod Yadav Attarde ◽  
◽  
...  
Keyword(s):  
Computed Tomography ◽  
Paranasal Sinuses ◽  
Anatomical Variants

Incidence of Agger Nasi cells and Haller cells in Computed Tomography of Paranasal Sinuses

2021 ◽  
Vol 23 (09) ◽  
pp. 640-645
Author(s):  
Vignesh Naachiyappan Meiyappan ◽  
◽  
Dr. Naveen Nagendran ◽  
Dr. Karthik Krishna Ramakrishnan ◽  
Dr. Sneha Yarlagadda ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Paranasal Sinuses ◽  
Significant Proportion ◽  
Great Accuracy ◽  
Sinus Surgery ◽  
Imaging Features ◽  
Anatomical Variants ◽  
Medical College ◽  
Osteomeatal Complex ◽  
Study Population

Introduction Agger nasi and haller cells are few of the common anatomical variants of Paranasal Sinuses (PNS) . They can cause obstruction of osteomeatal complex and frontal recess and can cause refractive sinusitis. Also these variants can lead to complications during procedures like Functional Endoscopic Sinus Surgery (FESS). Hence, complete knowledge about these variants and imaging features help in early diagnosis and also helps in avoiding complications during surgery. Materials and Method A retrospective study of 100 patients conducted during the period from January 2021- April 2021 in Saveetha Medical College and Hospital. All the patients included in the study were referred from the department of otorhinolaryngology for Computed Tomography of PNS. All the images were individually analysed and evaluated for occurrence of Agar Nasi cells and Haller cell variants. Results Out of the study population of 100 patients, 56% of the patients were observed for Agger Nasi cells and 19% of the patients were observed for Haller cells. Conclusion Our study concludes that agger nasi and haller cells are found in a significant proportion of the study population. Hence, Identifying these anatomical variants with great accuracy will help in diagnosing and appropriate management of refractive sinusitis and also be critical in supporting surgeons in tailoring surgery for patients when done preoperatively and thereby avoid fatal complications during procedures (1).

scholarly journals Topographic comparative study of paranasal sinuses in adult horses by computed tomography, sinuscopy, and sectional anatomy

2010 ◽  
Vol 34 (S1) ◽  
pp. 13-16 ◽  
Author(s):  
D. De Zani ◽  
S. Borgonovo ◽  
M. Biggi ◽  
S. Vignati ◽  
M. Scandella ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Comparative Study ◽  
Paranasal Sinuses ◽  
Sectional Anatomy

scholarly journals FOSSA NAVICULARIS MAGNA AT THE SKULL BASE: EMBRYOGENESIS AND ITS DETECTION BY COMPUTED TOMOGRAPHY

2018 ◽  
Vol 99 (3) ◽  
pp. 153-157
Author(s):  
S. L. Kabak ◽  
V. V. Zatochnaya ◽  
Yu. M. Mel’nichenko ◽  
N. A. Savrasova ◽  
E. A. Dorokh
Keyword(s):  
Computed Tomography ◽  
Congenital Anomaly ◽  
Skull Base ◽  
Paranasal Sinuses ◽  
Ventral Surface ◽  
The Body ◽  
Spiral Computed ◽  
Edge Defect ◽  
Medical Centers ◽  
Fossa Navicularis

Fossa navicularis magna was detected in multislice spiral computed  tomography in two patients who turned to the medical centers with  pathology of the paranasal sinuses. Its appearance is determined during  the development of the basilar part of the occipital bone and the body of the sphenoid bone in embryogenesis. This fossa has the  appearance of an edge defect on the ventral surface of the clivus in  CBCT scans. Practical radiologist should interpret such a finding as a  congenital anomaly of development, but not as an invasive lesion.

scholarly journals Prevalence of non-single canals in mandibular premolars and correlations with other anatomical variants: an in vivo cone beam computed tomography study

2019 ◽  
Author(s):  
Young-Eun Jang ◽  
Yemi Kim ◽  
Bom Sahn Kim ◽  
Sin-Young Kim ◽  
Hyung-Jong Kim
Keyword(s):  
Computed Tomography ◽  
Regression Analysis ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Odds Ratio ◽  
Cone Beam ◽  
Anatomical Variants ◽  
Morphologic Characteristics ◽  
Type V

Abstract Background A knowledge regarding anatomical variants is important to achieve success in endodontic treatment. Root canal treatment of mandibular first premolars (PM1s) is challenging due to the existence of numerous variations in canal configurations, including a C-shaped variant. We aim to determine the prevalence and morphologic characteristics of non-single canals of mandibular first (PM1s) and second (PM2s) premolars in a Korean population using cone beam computed tomography (CBCT) and to evaluate correlations between non-single canals of PM1s and other anatomical variants, such as distolingual roots (DLRs) in mandibular first molars (M1s) and C-shaped canals in mandibular second molars (M2s). Methods A total of 971 PM1s and 997 PM2s from 500 patients were examined in vivo by CBCT. Root canal configurations and C-shaped canals were determined in accordance with the Vertucci classification and Fan classification, respectively. The correlation between non-single canals in PM1s and DLRs in M1s was evaluated using logistic regression analysis. Results PM2s typically had one root (99.89%) with one canal (98.4%). Among PM1s with non-single canals (21.2%), Vertucci type V (10.9%) and C-shaped (3.7%) canals were prevalent. Among C-shaped PM1 canals, the majority were Vertucci type V (77.8%); a C-shaped configuration (C2) was predominant mostly at the middle and/or apical third of the root. After adjusting for other variables (i.e., sex, age, and side), C-shaped canals in PM1s was significantly correlated with the presence of DLRs in M1s (odds ratio = 2.616; 95% confidence interval, 1.257–5.443; p = 0.010). Conclusions The presence of C-shaped PM1 canals was positively related to the presence of DLRs in M1s. Although C-shaped canals in PM1s are difficult to distinguish, this finding could aid clinicians in predicting C-shaped canal configurations in PM1s of patients who exhibit DLRs in M1s.

scholarly journals Paranasal Sinuses in the Evaluation of Sinusitis using Computed Tomography: Cross Sectional Study

2021 ◽  
Vol 9 (4) ◽  
pp. 605-611
Author(s):  
  Syed Faizan Haider Naqvi ◽  
Nosheen Arshad ◽  
Muhammad Ahmad Naeem ◽  
Nazeeha Waseem ◽  
Narjis Batool ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Paranasal Sinuses ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional
Sign in / Sign up

Export Citation Format

Share Document