High‐resolution computed tomography analysis of the prevalence of onodi cells

Tomovic, Senja; Esmaeili, Azadeh; Chan, Norman J.; Choudhry, Osamah J.; Shukla, Pratik A.; Liu, James K.; Eloy, Jean Anderson

doi:10.1002/lary.23346

Cited by 61 publications

(52 citation statements)

References 23 publications

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“…1,6 The presence of sphenoethmoidal (Onodi) cells is associated with increased risk of injuring the optic nerves or carotid arteries during FESS and with other transsphenoidal and skull base procedures. 17,18,19 To avoid accidental injury to the carotid artery and optic nerves, it is important to be aware of the midline of a highly pneumatized sphenoid sinus when opening the sella via a transsphenoidal approach. 20 Postsellar pneumatization from the sphenoid sinus, particularly pneumatisation of the dorsum sella, may result in penetration of the posterior wall of the sphenoid with resultant CSF leak during transsphenoidal pituitary surgery.…”

Section: Discussionmentioning

confidence: 99%

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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Section: Discussionmentioning

confidence: 99%

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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“…Although the endoscopic endonasal transsphenoidal route provides a minimally invasive approach and wide field of view for removal of sellar and parasellar lesions, 10,14 a thorough knowledge of sphenoid sinus anatomy is necessary to avoid such complications as arterial hemorrhage, visual loss, and cranial nerve and extraocular muscle palsies. 9 …”

Section: Discussionmentioning

confidence: 99%

The central Onodi Cell: A Previously Unreported Anatomic Variation

Cherla¹,

Tomovic²,

Liu³

et al. 2013

Allergy�Rhinol (Providence)

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Preoperative recognition of the Onodi cell is necessary to avoid injury to closely associated structures, including the internal carotid artery and the optic nerve. This article describes the central Onodi cell, a variation in which a posterior ethmoid cell lies superior to the sphenoid sinus in a midline position with at least one optic canal bulge. To our knowledge, this anatomic variation has not been previously reported in the literature. Radiographic and endoscopic imaging of this unique variation is provided.

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“…Bilgisayarlı tomografi çalışmalarında prevelans oranları %8 ile %24 arasında değişen oranlarda bildirilirken, bu oran kadavra diseksiyon çalışmalarında %42 ile %60 arasında bildirilmiştir. [11][12][13][14] Tomovic ve ark, [15] yüksek çözünürlüklü tomografi ile daha önceki çalışmalardan farklı olarak %65.3 oranında Onodi hücresi prevelansı bildirmişlerdir. Bizim çalışmamızda hasta sayısı az olmakla birlikte Onodi hücre prevelansı %19 olarak saptandı.…”

Section: Discussionunclassified

Does Onodi cell limit the exposure of sella during transsphenoidal pituitary surgery?

İmre

Pınar²,

Yüceer³

et al. 2015

Kulak Burun Bogaz Ihtis Derg

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ÖZAmaç: Bu çalışmada, endonazal endoskopik transsfenoidal hipofiz cerrahisinde (EETHC) Onodi hücresi varlığının sella ekspojuru ile olan ilişkisi araştırıldı. ABSTRACTObjectives: This study aims to evaluate the association between the presence of Onodi cell and sella exposure during endonasal endoscopic transsphenoidal pituitary surgery (EETPS). Patients and Methods: Forty-two patients who underwent EETPS for a pituitary adenoma with the collaboration of Neurosurgery and Otorhinolaryngology Departments at Katip Çelebi University Atatürk Training and Research Hospital between February 2011 andMarch 2014 were retrospectively analyzed. Preoperative paranasal sinus tomography and intraoperative findings were evaluated for the presence of Onodi cells. The location of the Onodi cell and its relation with sella exposure during surgery were also assessed. Results:The incidence of Onodi cell was 19%. The Onodi cells were observed in eight of 42 patients on preoperative paranasal sinus computed tomography. The Onodi cells were unilateral in five patients and bilateral in three. Intraoperative findings were correlated with tomographic findings. In seven patients, Onodi cells limited the exposure of sellar floor and the inferior-medial wall of these cells were removed and connected with the sphenoid sinus and the entire sellar floor was exposed. In the remaining one patient, the Onodi cell was smaller and located superolaterally. This cell was not removed, as it did not limited the sellar exposure.Conclusion: The Onodi cell may limit the sella exposure during transsphenoidal surgery. Onodi cell should be removed and connected with the sphenoid sinus cavity for the entire sellar floor exposure.

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High‐resolution computed tomography analysis of the prevalence of onodi cells

Abstract: We found a higher prevalence of Onodi cells in our cohort than previously reported in the literature. Therefore, it is important for surgeons to anticipate the presence of these cells during endoscopic sinus and skull base procedures to prevent potential complications.

Cited by 61 publications

References 23 publications

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

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

The central Onodi Cell: A Previously Unreported Anatomic Variation

Does Onodi cell limit the exposure of sella during transsphenoidal pituitary surgery?

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