Anatomical Variations in Sino-Nasal Region: A Computer Tomography (CT) Study

Mohannad A. Al- Qudah


Objective: The aim of this study is to report the frequency of anatomical variations in the sinonasal
region in adult Jordanian patients.
Patients and Methods: This study was performed between April to November 2006 in the Department
of Otolaryngology, King Abdullah University Hospital, Irbid, Jordan .110 consecutive nasal and
paranasal sinus Computer Tomography (CT) for adult patients with nasal symptoms were reviewed for
the presence of agger nasi cell, paradoxical middle turbinate, haller cell, and nasal septum deviation. We
also report the incidence of pneumatisation in Crista galli, nasal septum, middle and superior turbinate as
well as uncinate process.
Results: There were 58 males and 52 females with an average age of 34 (age ranges from 16-77).
Agger nasi cell was the most common variant and was observed in 84% of the cases, Concha Bullosa
(CB) in 62%, Septal deviation in 43%. Pneumatization of Crista galli, Septum, Superior turbinate and
Uncinate process was seen in 28%, 27%, 25% and 6%, respectively. Haller's cell was noted in 20% and
paradoxical middle turbinate in 18%.
Conclusion: Anatomical variations in sinonasal region are common in our patients with nasal symptoms
and seem to be more frequent than those reported by other races. This emphasizes the importance of
adequate preoperative and intraoperative review of paranasal sinus CT scans in patients undergoing ESS
to avoid the potential of serious surgical complications.


Sino-Nasal Region, Anatomical Variations, and Computer Tomography.

Full Text:



  • There are currently no refbacks.