Computed Tomography Anatomy of the Paranasal Sinuses and Anatomical Variants of Clinical Relevants in Egyptian Adults .

NCT ID: NCT05301777

Last Updated: 2022-03-31

Basic Information

• Recruitment Status: UNKNOWN
• Total Enrollment: 200 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2022-04-01
• Study Completion Date: 2023-06-01

Brief Summary

The aim of this study is to show the anatomy of the paranasal sinuses as delineated by the computed tomography among egyptian adults and to describe the variants which not only predispose to chronic sinusitis but may lead to complications in endoscopic sinonasal surgery.

Detailed Description

The paranasal sinuses are group of air filled spaces surrounding the nasal cavity; which start developing from the primitive choana at 25-28 weeks of gestation.1 Three projections arise from the lateral wall of the nose and serve as the beginning of the development of the paranasal sinuses. The anterior projection forms the Aggernasi, the inferior or maxiloturbinate projection forms the inferior turbinates and maxillary sinus, while the superior or ethmoidoturbinate projection forms the ethmoidal air cells and their corresponding drainage channels. The sinuses are named from the facial bones in which they are located. The maxillary and ethmoid sinuses are aerated at birth, while the sphenoid sinuses and frontal sinuses are pneumatized at about the 2nd and 6th year of life respectively.1 The sinuses reach the adult size at adolescent age.1 Radiologic evaluation of the paranasal sinuses is essential in delineating the location and extent of sinonasal diseases and in planning surgical intervention. Plain radiography, computed tomography and magnetic resonance imaging are applied in evaluating the sinuses.

Standard paranasal sinus radiograph can readily demonstrate the maxillary or frontal sinus diseases but incompletely delineates ethmoid sinus due to overlapping of structures.2 The role of Magnetic resonance imaging is limited but may provide information on paranasal sinuses fungal infection and differentiating thickened mucosa from fluid retention.

Computed tomography is considered the method of choice in delineating completely the normal anatomy and anatomical variants of the paranasal sinuses and it is extremely useful in the pre-operative planning and in post operative follow-up in cases of endonasal interventions.

The development of the paranasal sinuses especially the ethmoid labyrinth is associated with anatomical variations.3 Some of which are common while others are rare. Recognition of these variants is important to both the rhinologist and radiologist. Proximity of these occasional cells to the main drainage pathway of the paranasal sinuses may reduce the mucociliary clearance, thus predisposing to inflammatory processes and causing endonasal endoscopic surgery complications.

Conditions

Sinusitis

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Interventions

Computed tomography

Computed tomography

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• all cases of computed tomography scan of the paranasal sinuses obtained in the Radiology department of our health institution

Exclusion Criteria

• Patients with facial trauma, positive paranasal sinus pathology, head and neck tumours

and previous surgery were excluded.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Assiut University

OTHER

Sponsor Role: lead

Responsible Party

Aya Emad Eldin Moghazy

Assuit university radiology department

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Mostafa Hashem

Role: PRINCIPAL_INVESTIGATOR

Assiut University

Hazem Abozaid

Role: PRINCIPAL_INVESTIGATOR

Assiut University

Central Contacts

Aya Moghazy

Role: CONTACT

eaya598@gmail.com

01030361057

Aya Emad

Role: CONTACT

eaya598@gmail.com

01030361057

Other Identifiers

CT paranasal sinuses

Identifier Type: -

Identifier Source: org_study_id