Evaluation of osteomeatal complex by cone-beam computed tomography in patients with maxillary sinus pathology and nasal septum deviation.

BACKGROUND: This study aimed to determine if there is a relationship between the presence of maxillary sinus pathology, nasal septum deviation and various lengths of the osteomeatal complex. METHODS: A total of 223 CBCT images were included in the study. The lengths of the osteomeatal complex (maxillary sinus ostium width, infundibulum length, maxillary sinus ostium height) were analyzed. The presence of maxillary sinus pathology, nasal septum deviation, age, sex, right-left, septum deviation level, and the relationship between pathology level and all variables were evaluated. RESULTS: The average maxillary sinus ostium width, ostium height and infundibulum length were 3.06 ± 0.70 mm, 30.10 ± 5.43 mm and 8.82 ± 1.86 mm, respectively. Ostium width was significantly higher in the healthy group than in the groups evaluated in the presence of deviation and pathology. A significant difference was found in infundibulum length only between the healthy condition and the condition evaluated in the presence of deviation. No significant difference was observed between the groups in terms of ostium height. In all groups, ostium height and infundibulum length were significantly higher in men than in women. The age group with the highest average ostium height was found in the 35-44 age group (p < 0.001). CONCLUSION: Identifying normal and abnormal conditions in the osteomeatal complex area is important for diagnosing the cause of a patient's complaint, guiding the surgical procedures to be performed, and preventing possible complications that may arise during surgical procedures.

How to Prevent and Manage Postoperative Complications in Maxillary Sinus Augmentation Using the Lateral Approach: A Review.

Maxillary sinus augmentation with a lateral approach is known to present more postoperative complications than other atrophic posterior maxilla treatment modalities because it is more invasive. These complications include infections that occur in the form of chronic or acute sinusitis. According to the literature, the frequency of these complications ranges from 3% to 5%. They can result from an inadequate management of intraoperative complications or from a poor evaluation of maxillary sinus particularities and pathology before the surgery. Therefore, the prevention of postoperative complications lies in the selection of cases that will allow for the identification and evaluation of infectious risk. Only a multidisciplinary approach that includes an implantologist, a rhinologist, and the treating physician will allow this. On the other hand, in infectious complication cases, the intervention of the otorhinolaryngologist (ENT) specialist is necessary. Based on the available literature and the author's experience, the methodology described in this article will allow for the prevention and management of postoperative complications related to this surgical technique.

A CBCT Study for Anatomic Variations of Osteomeatal complex in Patients With Cleft Lip and Palate.

OBJECTIVE: To evaluate the anatomy and variations of osteomeatal complex (OMC) by comparing patients with nonsyndromic cleft lip and palate (CLP) and control group. DESIGN: This case-control study was retrospectively analyzed using cone-beam computed tomography data. SETTING: Istanbul University Faculty of Dentistry Department of Dentomaxillofacial Radiology. PATIENTS: The study was conducted with 100 patients (44 females, 56 males) with CLP and 100 patients in the control group, which matched gender and age (with a maximum difference of 3 years). VARIABLES: OMC variations are grouped as follows: ethmoidal, conchal, uncinate process, and septal variations. Then, we evaluated the presence of these OMC variations and compared them between the two groups. STATISTICAL ANALYSIS: The McNemar's test was used to determine any significant differences between the groups for all indices at the 95% confidence level. RESULTS: The most common anatomic variation in this study was Agger nasi cell (97%) and concha bullosa (97%) in the patients with CLP, while Agger nasi cell was the most common variation (99%) in the controls. Moreover, the atelectatic uncinate process was the least observed variation in both groups (1%). The incidences of paradoxical concha (58%;42%), bifid concha (29%;11%), deviated nasal septum (92%;80%) were significantly higher in the CLP group (p < 0.05). CONCLUSIONS: The statistically significant results found when comparing OMC anatomy between the two groups reveal the importance of three-dimensional evaluation before functional endoscopic sinus surgery in patients with CLP.

A Study of Anatomical Variations in the Nasal Cavity in Cases of Chronic Rhinosinusitis.

Chronic rhinosinusitis is very common disorder encountered in general population. Anatomical variations in the nasal cavity are mainly responsible for improper drainage and subsequent chronic rhinosinusitis. Present study is crosssectional and observational study undertaken at ENT department of tertiary care hospital. 200 cases of chronic rhinosinusitis fulfilling inclusion criteria were evaluated for various anatomical variations in the nasal cavity using diagnostic nasal endoscopy and computed tomography. Present study of 200 cases showed male preponderance M: F ratio 1:0.56. Most cases (79.5%) belonged to age group 11-50. Nasal obstruction was presenting complaint in 90% cases. 78% cases had septal deviation. 20% had septal spur. 32% cases had enlarged inferior turbinate, 9% had paradoxical middle turbinate, 13% had enlarged middle turbinate, 1% had bifid middle turbinate. 12% had pneumatised middle turbinate. 7% had enlarged uninate process, 1.5% cases had hypoplastic uncinate process and 7% had enlarged ethmoidal bulla. 45% cases showed oval sphenoid ostium while 31% showed circular and 8% slit like opening. Agger nasi cells were present in 82% cases. All 200 cases had anatomical variations in nasal cavity so it can be concluded that these are responsible for chronic rhinosinusitis.

Are of Osteomeatal Complex Variations Related to Nasolacrimal Canal Morphometry.

INTRODUCTION: Due to the close anatomic relationship between paranasal structures and NLC, the morphometric measure of the nasolacrimal canal (NLC) could be affected by the osteomeatal complex (OMC) anatomical variations. The present study aimed to assess the effect of OMC variations on the NLC morphometric features using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: This cross-sectional study consisted of CBCT images of 150 subjects in the case group with at least one OMC variation and 40 cases in the control group without any OMC variation within the age range of 18-50 years. The presence of the OMC variations, including agger nasi, nasal septum deviation, concha bullosa, Haller cells, paradoxical middle turbinate, and pneumatization of the uncinate process, was evaluated in each patient. The NLC morphometric measurements were performed and compared between the case and control groups. RESULTS: The middle anteroposterior diameter and middle sectional area of NCL were significantly higher in patients with OMC variations, as compared to that in the control group. The NLC volume was significantly higher in patients with agger nasi, nasal septum deviation, concha bullosa, and pneumatization of the uncinate process, as compared to that in the control group. Nonetheless, no significant difference in NLC angulation with the nasal floor or Frankfurt horizontal plane was observed in the presence of each OMC variation. CONCLUSIONS: As evidenced by the obtained results, a higher volume of the canal was revealed in the presence of some of the OMC variations. Therefore, it can be suggested that OMC variations cannot be a predisposing factor in cases with primary acquired nasolacrimal duct obstruction.

Correlation of Nasal Endoscopy and Computed Tomography Scan Findings in Adult Patients With Chronic Rhinosinusitis.

Background: The diagnosis of chronic rhinosinusitis (CRS) is usually based on appropriate clinical features. However, confirmation is based on the evidence of features of inflammation on nasal endoscopy and/or computed tomography (CT) scan of the paranasal sinuses. Though CT scan is the gold standard, studies have found nasal endoscopy equally helpful and sometimes complementary to CT scan in the diagnosis of CRS. Aims and Objectives: The aim of this study is to assess and correlate the findings on nasal endoscopy and CT scan of adult patients with CRS. Materials and Methods: Consecutive adult patients clinically diagnosed with CRS were enrolled. Those who did both nasal endoscopy and CT scan of the paranasal sinuses within 3 months' interval were studied. The findings were correlated. Results: The commonest symptoms were rhinorrhea and nasal obstruction seen in 95% and 92.5% of the patients. Purulent discharge in the middle meatus was the commonest finding on nasal endoscopy seen in 56.7% of the patients. There was pathology of at least one paranasal sinus in 71.7% of the patients on CT scan. Maxillary sinus was most commonly affected. Obstruction of the osteomeatal complex was present in 51.7% of the patients. The sensitivity, specificity, positive, and negative predictive values of nasal endoscopy were 73.3%, 85.3%, 92.7%, and 55.8%, respectively. Conclusion: The presence of cream-coloured discharge in the middle meatus on nasal endoscopy is a good predictive index in the diagnosis of CRS, whereas sinus intraluminal lesions are better elucidated by CT scan.

Evaluation of the Relationship of Dimensions of Maxillary Sinus Drainage System with Anatomical Variations and Sinusopathy: Cone-Beam Computed Tomography Findings.

OBJECTIVE: The aim of this study was to evaluate the correlation between the length of the infundibulum and ostium height with the anatomic variations of osteomeatal complex (OMC) and sinus pathology using cone-beam computed tomography (CBCT). METHODS: CBCT images of 204 patients (408 maxillary sinuses) were evaluated retrospectively. The height of the ostium and the length of the infundibulum were measured. The presence of maxillary sinus pathology, nasal septal deviation, Haller cells, concha bullosa, and sinus septa were analyzed. The correlation between the size of the maxillary sinus drainage system and anatomic variations was compared using the t test, Fisher's exact test, and χ2 test. The effect of tooth loss on the length of the infundibulum and ostium height was also analyzed using ANOVA. RESULTS: The height of the ostium and the maximal septal deviation angle were found to be significantly greater in males (p < 0.05). As ostium height increased, the presence of maxillary sinus septa increased (p < 0.05). No statistically significant association was detected between other variations and the length of infundibulum or ostium height. The relationship between tooth loss and both the length of the infundibulum and ostium height were found to be insignificant (p > 0.05). CONCLUSIONS: Radiographic examination, especially on CBCT images, is important for an evaluation of maxillary sinuses. here, we demonstrated a significant relationship between ostium height and the presence of maxillary sinus septa. However, it was found that nasal septal deviation, concha bullosa, Haller cells, and other sinusopathies did not have a major effect on the size of the maxillary sinus drainage system.

Effect of Anatomical Variations of Osteomeatal Complex on Chronic Rhinosinusitis: A Propective Study.

This is a prospective observational cross sectional study comprising of 57 patients who were having symptoms of chronic rhinosinusitis which were evaluated with the help of computed tomography scan (Coronal and axial sections) to identify various anatomical variants of osteomeatal complex and to find their percentage and to find the pattern of sinus involvement in chronic rhinosinusitis patients. The most common anatomical variation was agger nasi which was present in 52 (91.23%) patients followed by abnormal uncinate process in 43 (75.44%) patients and maxillary sinus was the most commonally involved sinus in CRS.

Chronic Rhinosinusitis in Children: Pathophysiology, Evaluation, and Medical Management.

PURPOSE OF REVIEW: Pediatric chronic rhinosinusitis (CRS) is a common disorder that carries significant morbidity. The diagnosis requires sinus symptoms that persist despite standard medical therapy greater than 3 months. Viral infections, allergies, and anatomic differences in children lead to chronic obstruction of the osteomeatal complex. RECENT FINDINGS: Chronic rhinosinusitis as a diagnosis is a conglomeration of multiple phenotypes and endotypes. As such, the diagnosis and management are complex. New survey studies provide some consensus on prevalence and management of this disease in children. In this review, we highlight the differential diagnosis of pediatric CRS, including non-eosinophilic/infectious variants, eosinophilic variants with and without nasal polyps, allergic fungal sinusitis, aspirin-exacerbated respiratory disease, primary immunodeficiency, and disorders of mucociliary clearance. Further, we detail treatment options that should be considered. Finally, we feature emerging potential treatment options of CRS, including anti-immunoglobulin E, interleukin-5, and interleukin-4 receptor alpha subunit.

Importância do complexo osteomeatal no planejamento do levantamento de seio maxilar / Importance of the evaluation of the osteomeatal complex in the planning of maxillary sinus lift

O desvio de septo nasal, concha bolhosa e a obstrução do óstio são alterações do complexo osteomeatal, que podem interferir no volume dos seios maxilares, em sua oxigenação, drenagem adequada de fluidos e nos resultados de cirurgias nessa região. A adoção de um protocolo de avaliação do complexo osteomeatal envolvendo uma equipe multidisciplinar no planejamento de cirurgias de levantamento de seio maxilar pode proporcionar a diminuição do surgimento de complicações pós-operatórias relacionadas à drenagem e ventilação, prejudicadas pelo desvio de septo nasal, concha bolhosa e obstrução do óstio.

Nasal septum deviation, concha bullosa and ostium obstruction are alterations of the osteomeatal complex that may interfere with the volume of the maxillary sinuses, their oxygenation, adequate drainage of fluids and the results of surgeries in this region. The adoption of a protocol for evaluation of the osteomeatal complex involving a multidisciplinary team in the planning of surgeries of maxillary sinus can provide a reduction in the appearance of postoperative complications related to drainage and ventilation impaired by nasal septum deviation, concha bullosa and obstruction of the ostium.

Sinonasal Anatomical Variants: CT and Endoscopy Study and Its Correlation with Extent of Disease.

To evaluate the incidence of anatomical variations in sinonasal area by nasal endoscopy and CT scan paranasal sinuses and to correlate the anatomical variations in sinonasal area with extent of disease. The present study was conducted on 40 patients of chronic sinusitis. All the patients underwent CT scan paranasal sinus axial and coronal view and nasal endoscopy. The most common anatomical variations were agger nasi cells (80 %), deviated nasal septum (72.5 %) and concha bullosa (47.5 %). Other anatomical variations seen in sinonasal region were uncinate process variations, paradoxical middle turbinate, haller cells, accessory ostia of maxillary sinus, multiseptated sphenoid. Osteomeatal unit (87.5 %) and maxillary sinuses (87.5 %) were the most commonly involved which was followed by anterior ethmoids (70 %), posterior ethmoids (50 %), frontal sinuses (32.5 %) and the sphenoids (20 %). Considering the results obtained, we believe that anatomical variations may increase the risk of sinus mucosal disease. We therefore, emphasize the importance of a careful evaluation of CT study in patients with persistent symptoms of chronic rhinosinusitis.

Osteomeatal Complex: A Study of Its Anatomical Variation Among Patients Attending North Bengal Medical College and Hospital.

Lateral nasal wall of each nasal cavity provides the final common pathway of drainage of the mucociliary clearance of frontal, maxillary and anterior ethmoidal air cells. Anatomical variants like concha bullosa, Haller cells, agger nasi cells, enlarged bulla ethmoidalis may obstruct the mucociliary clearance through osteomeatal complex and cause rhino sinusitis. The objectives were to find out the anatomical variation of osteomeatal complex and its dimensions when present. The present study was a descriptive, hospital based cross sectional study carried out in the outpatient departments of North Bengal Medical College and Hospital, West Bengal, India, among patients aged 15 years and above. Coronal CT scan of paranasal sinus and orbit region was done. Data was collected with the help of semi structured predesigned and pretested questionnaire. Of the 44 study patients, 15.9 % had concha bullosa, 11.36 % had paradoxical middle concha, 27.3 % had Haller cell, 18.2 % had agger nasi cell. Lateral attachment and medial free margin of uncinate process were also measured in respect to medial body line. 77.3, 59.1 and 47.7 % had sneezing, rhinorrhoea and headache respectively. The harmony of mucociliary clearance and obstruction free osteomeatal complex is the key factor for ventilation and drainage of maxillary, frontal and anterior ethmoidal air cells.

A Study of Anatomical Variations of Osteomeatal Complex in Chronic Rhinosinusitis Patients-CT Findings.

BACKGROUND: Chronic rhino sinusitis (CRS) is the most common disease for which consultation of otorhinolaryngologist is sought. The approach to patients with chronic rhino sinusitis is endoscopic surgery which aims at removing the obstruction of the main drainage pathway. The osteomeatal complex based essentially on the concept that such obstruction perpetuates the sinus disease. This in turn requires the surgeons to have detailed knowledge of the anatomy of the lateral nasal wall, paranasal sinuses and surrounding vital structures and of the large number of anatomical variants in the region. AIM: To study anatomical variations of osteomeatal complex in chronic sinusitis patients. MATERIALS AND METHODS: Descriptive cross-sectional study design in which 54 consecutive cases of chronic rhino sinusitis patients attending the ENT outpatient department, who had chronic sinusitis for more than three months duration not responding to the medical line of treatment and who were willing to undergo Functional Endoscopic Sinus Surgery satisfying the inclusion criteria were studied. The results were expressed in percentage and proportions. RESULTS: In our study it was observed that 53.7% of the chronic sinusitis cases had two or more anatomical variations and 33.3% of the cases had single anatomical variation. Deviated nasal septum was found to be the most common amongst the anatomical variations in chronic sinusitis cases in the present study which was followed by unilateral concha bullosa and paradoxically bent middle turbinate. Agger nasi cell and Haller cell were seen in one case each. CONCLUSION: Prevalence of multiple anatomical variations was more in our study in comparison to single anatomical variation. Deviated nasal septum was the most common anatomical variation encountered in our study followed by concha bullosa.

Aperture width of the osteomeatal complex as a predictor of successful treatment of odontogenic maxillary sinusitis.

Odontogenic maxillary sinusitis (OMS) is an inflammatory disease caused by the spread of dental inflammation into the sinus. The long-term administration of antibiotic medicine and/or treatment of the causative tooth are the usual initial treatments. These initial treatments are not always effective, and the reason is not well understood. The purpose of this study was to identify factors of significance that may contribute to the results of the initial treatment of OMS. Thirty-nine patients were studied, divided into two groups according to the results of initial treatment: effective or non-effective. The effective group comprised 20 patients who were cured by initial treatment. The non-effective group comprised 19 patients who required an additional operation. The duration of symptoms, spread into the other sinuses, aperture width of the osteomeatal complex (OMC) on the side of the maxillary sinus, and anatomical variations in the sinuses were compared between the groups. The only significant difference found was in the aperture width of the OMC, which was significantly narrower in the non-effective group than in the effective group. The aperture width of the OMC may be a significant predictor of the effectiveness of initial treatment of OMS.

Biometría etmoidal, del complejo osteomeatal y sus variantes anatómicas: estudio en cadáveres / Ethmoidal and osteomeatal complex biometry and its anatomical variations: cadavers study

La anatomía del etmoides y del complejo osteomeatal ha sido la base fundamental de muchos avancescientíficos especialmente en el campo de la cirugía endoscópica. Por ello el objetivo del presente trabajo es describir la anatomía etmoidal, del complejo osteomeatal y sus variantes anatómicas en los cadáveres del anfiteatro de la Universidad del Rosario, un estudio observacional descriptivo tiposerie de casos donde se tomaron 20 cabezas, se hicieron disecciones y mediciones en ellas. Se evaluó la concordancia interobservador e intraobservador en las variables numéricas con el paquete SPSSversión 11.5, se halló el coeficiente de correlación intraclase (CCI), el intervalo de confianza (IC) tomando significativo CCI > 0.6; y para las variables categóricas el test de concordancia Kappa, a un nivel de significancia de cinco por ciento (0.05). De los resultados finales, se encontraron promedios para la apófisis Crista Galli de longitud ancho yprofundidad. Para la lamela lateral se encontró mayor frecuencia el Keros II en 45% seguida de Keros I (42,5%) y en menor frecuencia Keros III en 12,5%. Se halló el promedio de la longitud antero-posterior y supero-inferior de los cornetes superior, medio y supremo. Se describieron seis variantes anatómicas de la forma del cornete superior y se encontraron cinco variantes anatómicas de la forma del cornete medio. El cornete supremo se encontró en el 15% de los especímenes y se encontraron dosformas del mismo. Fueron observadas 10 variantes anatómicas de la inserción superior de la apófisis unciforme y ocho tipos de inserción inferior del mismo. Se creó una clasificación de la inserción inferior de la apófisis unciforme con respecto al ostium del seno maxilar...

Ethmoidal and osteomeatal complex anatomy had been fundamental base of several scientific advances, especially in endoscopic sinus surgery. The objective of this study is to describe ethmoidal anatomy, osteomeatal complex and its anatomical variations in corpse´s anphitheater of the Rosario University; in an observational descriptive studytype case series. Twenty heads (20) were evaluated with interobserver and intraobserver measures in numercial variables with SPSS version 11.5, it was obtained the intraclass correlation coefficient (ICC), the confidence interval (CI) with significance ICC>0,6 and categorical Kappa variable test with levelof significance of five percent (0.05).Of the final outcomes, Crista galli process wide and depth length was obtained. Lateral lamella was more frequent Keros type II (45%) than type I (42,5%) and type III (12,5%). For the superior, supreme and middle turbinates was found its length and incidence. Six anatomical variations of the superior attachment of the uncinate process and five anatomical variations of the form of middle turbinate weredescribed. The supreme turbinate was found in 15% of the specimens and there were two forms of it. Ten anatomical variations of the superior attachment of the unciform process and eight types of its inferior attachment were found. It was created a new classification of inferior attachment of uncinate process with relation to the maxillary ostia...

Role of F.E.S.S. in chronic sinusitis.

Functional endoscopic sinus surgery (FESS) is a new and exciting treatment for chronic sinus disease. A prospective study of 50 patients undergoing FESS was undertaken at the department of Otolaryngology, Dayanand Medical College & Hospital, Ludhiana. Parameters studied included patient symptoms, medical history, medical therapy, radiologic findings, complications and postoperative symptoms. 62% of our patients had sinonasal polypi (ethmoidal polypi 56%, antrochoanal polypi 6%) while 38% had chronic sinusitis. Osteomeatal complex involvement (88%) was the most common preoperative CT scan findings. All the cases were subsequently suhjected to functional endoscopic sinus surgery, studied for post-operative complications and 82% of the patients achieved improvement in preoperative symptoms. It was concluded that FESS is a highly successful treatment for chronic sinus disease.

Concha bullosa: Frequency and appearances on sinonasal CT.

Aeration of the middle turbinate, termed "Concha bullosa", is one of the most common, obstructive, anatomic variants seen in patients with sinusitis. The present study was carried out on 150 patients of chronic sinusitis, who underwent CT scan paranasal sinuses, coronal section prior to Functional Endoscopic Sinus Surgery (FESS). The CT Scans were evaluated to detect the incidence of Concha bullosa and its types, the significance of Concha bullosa in genesis of osteomeatal complex disease and relation between type of Concha bullosa and osteomeatal complex disease. Later the patients were subjected to FESS. In this study we found that the overall incidence of inflammatory disease in the osteomeatal complex in these symptomatic patients was no different between with and without Concha bullosa and osteomeatal complex disease is found to be more frequent if peumatization is localized to inferior part of middle turbinate. Concha bullosa requires specific endoscopic surgical techniques.