Pictorial essay: Anatomical variations of paranasal sinuses on multidetector computed tomography-How does it help FESS surgeons?

Abstract The introduction of functional endoscopic sinus surgery in the 1980s brought about a drastic change in the treatment of patients with rhinosinusitis, improving quality of life through the removal of pathological processes or anatomical variations that obstruct the drainage pathways of the paranasal sinuses. However, despite the routine use of computed tomography in the anatomical evaluation of the paranasal sinuses, most radiological reports still do not provide sufficient information to guide the surgical planning. The objective of this pictorial essay was to demonstrate, through computed tomography, the main anatomical variations of the paranasal sinuses, the recognition of which is fundamental for preoperative planning, in order to avoid treatment failure and iatrogenic complications.

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Evaluation of Anatomical Variations in Nose and Paranasal Sinuses by using Multidetector Computed Tomography

International Journal of Contemporary Medicine Surgery and Radiology ◽

10.21276/ijcmsr.2019.4.3.32 ◽

2019 ◽

Vol 4 (3) ◽

Author(s):

Mallikarjun M. Devareddy ◽

Shilpa Devakar

Keyword(s):

Computed Tomography ◽

Multidetector Computed Tomography ◽

Paranasal Sinuses ◽

Anatomical Variations ◽

Nose And Paranasal Sinuses

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Tomographic diagnosis and relevant aspects of otosclerosis

Radiologia Brasileira ◽

10.1590/s0100-39842013000500007 ◽

2013 ◽

Vol 46 (5) ◽

pp. 307-312 ◽

Cited By ~ 2

Author(s):

Juliana Oggioni Gaiotti ◽

Natália Delage Gomes ◽

Ana Maria Doffémond Costa ◽

Caroline Laurita Batista Couto Villela ◽

Wanderval Moreira ◽

...

Keyword(s):

Computed Tomography ◽

Hearing Loss ◽

Differential Diagnosis ◽

Multidetector Computed Tomography ◽

Surgical Planning ◽

Otic Capsule ◽

Metabolic Derangement ◽

Pictorial Essay ◽

Temporal Bone Anatomy ◽

Endochondral Layer

A literature review and pictorial essay were developed to discuss the importance of knowing the main findings and locations of otosclerosis at multidetector computed tomography (MDCT). The authors performed a retrospective review of cases of otosclerosis diagnosed in their institution by means of high resolution multidetector computed tomography. Otosclerosis corresponds to otic capsule dysplasia characterized by metabolic derangement of its endochondral layer. Such condition constitutes a relevant cause of sensorineural hearing loss, affecting about 7% to 10% of the general population. The diagnosis is usually clinical, but imaging methods play a significant role in the anatomical detailing, differential diagnosis, surgical planning and evaluation of postoperative complications. Among such methods, the relevance of MDCT is highlighted. Radiologists should be familiar with the MDCT findings of otosclerosis, as well as with the temporal bone anatomy to assist in the appropriate clinical management of this disease.

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Evaluation of Anatomical Variations in Maxillary Sinus and Management of Chronic Sinonasal Disease

Journal of Evolution of Medical and Dental Sciences ◽

10.14260/jemds/2021/680 ◽

2021 ◽

Vol 10 (38) ◽

pp. 3351-3355

Author(s):

Ganesh Manohar Vihapure ◽

Akshay Sorade ◽

Kaenat Ahmed ◽

Lakshmi Sravya Yarlagadda ◽

Khaleel Basha Munnaru

Keyword(s):

Computed Tomography ◽

Maxillary Sinus ◽

Paranasal Sinuses ◽

Endoscopic Sinus Surgery ◽

Anatomical Variations ◽

Functional Endoscopic Sinus Surgery ◽

Sinus Surgery ◽

Successful Outcome ◽

Operative Care ◽

Number Of Patients

BACKGROUND The paranasal sinuses (PNS) have various anatomical difference. Computed tomography (CT) is an excellent means of providing anatomical information of this region, disease extent, assisting endoscopic evaluation and guiding treatment. Functional endoscopic sinus surgery (FESS) has become an increasingly popular treatment for chronic sinus diseases. CT of the paranasal sinuses has become a roadmap for FESS. The present study focuses on the assessment of the efficacy, safety and benefits of functional endoscopic sinus surgery in cases of maxillary pathologies and also study the anatomical variations in maxillary sinus in computed tomography and its usefulness in planning and management of chronic sinonasal diseases. METHODS It was a prospective study and a total of 80 patients were included in this study from July 2019 to June 2020 in the Otolaryngology Department, KIMS, Karad. Standard surgical steps were applied in each case according to the extent of disease. All patients underwent standard post-operative care. All findings were recorded and studied. RESULTS Total number of patients were 80. Of which, 31 (38.75 %) patients were operated for ethmoidal polyp, 24 (30 %) for chronic rhinosinusitis, 10 (12.5 %) for antrochoanal polyp, 9 (11.25 %) for rhinosporidiosis and 6 (7.5 %) for inverted papilloma. Postoperative complications were periorbital echymoses (13 %), synechiae (2.5 %), epiphora (2.5 %), infection (2.5 %), hemorrhage (4 %). Complete relief of symptoms were noted in 81.67 % cases. CONCLUSIONS Successful outcome and patient satisfaction post treatment can be obtained by careful evaluation and patient selection by history, examination and most importantly, proper imaging of the sinuses. KEY WORDS Maxillary Sinus, Sinusitis, Nasal Polyp, Paranasal Sinus Disease, Computed Tomography (CT)

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Agreement between cone-beam computed tomography and functional endoscopic sinus surgery for detection of pathologies and anatomical variations of the paranasal sinuses in chronic rhinosinusitis patients: A prospective study

Imaging Science in Dentistry ◽

10.5624/isd.2020.50.4.299 ◽

2020 ◽

Vol 50 (4) ◽

pp. 299

Author(s):

Nafiseh Nikkerdar ◽

Nastaran Eivazi ◽

Mohana Lotfi ◽

Amin Golshah

Keyword(s):

Computed Tomography ◽

Prospective Study ◽

Cone Beam Computed Tomography ◽

Paranasal Sinuses ◽

Endoscopic Sinus Surgery ◽

Anatomical Variations ◽

Functional Endoscopic Sinus Surgery ◽

Sinus Surgery ◽

Cone Beam ◽

A Prospective Study

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Role of anatomical variations in chronic rhinosinusitis on diagnostic nasal endoscopy and computed tomography scan of paranasal sinuses

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20195697 ◽

2019 ◽

Vol 6 (1) ◽

pp. 101

Author(s):

Falguni J. Parmar ◽

Avani D. Patel

Keyword(s):

Computed Tomography ◽

Chronic Rhinosinusitis ◽

Paranasal Sinuses ◽

Care Center ◽

Tertiary Care ◽

Middle Turbinate ◽

Anatomical Variations ◽

Sinus Surgery ◽

Nasal Endoscopy ◽

Advantages And Disadvantages

Background: Diagnostic nasal endoscopy (DNE) and computed tomography (CT) of para nasal sinuses play an important role in the diagnosis and treatment of chronic rhinosinusitis (CRS). The aim and objective of the study is to see the anatomical variations of the sinonasal region in CRS on DNE and CT paranasal sinuses (PNS).Methods: A descriptive type retrospective study of 30 patients attending the ENT outpatient department of our tertiary care center clinically diagnosed as CRS with symptoms persisting for 12 weeks or more, along with previously failed medical management, including topical nasal steroids, systemic decongestant and extended courses of antibiotics and who were willing to undergo endoscopic sinus surgery are included. Results: Majority of the patients had septal deviation either an anterior or posterior deviation but majority of the cases are asymptomatic for the deviation. Anatomical variations of uncinate process, middle turbinate, inferior turbinate, frontal recess, agger nasi cells, haller cells were studied as well.Conclusions: Prolonged duration of rhinosinusitis symptoms (more than 8-12 weeks) is the primary reason to evaluate a patient for CRS and making the choice between CT PNS or DNE is patient and disease dependent. Understanding the advantages and disadvantages of each helps us realize that they are of synergistic in nature and not competitive.

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