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Indian Journal of Clinical Anatomy and Physiology

Computed tomographic study of sphenoid sinus and its septations

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Article Type : Research Article

Author Details: Kuldeep Kumar,Pooja Gautam*,A P Mishra,C S Ramesh Babu

Volume : 6

Issue : 3

Online ISSN : 2394-2126

Print ISSN : 2394-2118

Article First Page : 325

Article End Page : 330


Introduction: Knowledge of sphenoid sinus anatomy and its variations is of prime importance in transsphenoidal
endoscopic skull base surgery.
Aim: The aim of the present study was to measure the bilateral sphenoidal sinus parameters [depth, width,
and height] and determine the number and pattern of attachments of intra-sphenoid sinus septations in 52
subjects by computed tomography.
Materials and Methods: Cranial computed tomographic images of 52 normal subjects were included
in our study. Four cases in whom the septations were absent were excluded from the measurement
of dimensions of the sinus. The depth, width, and height in 48 sphenoidal sinuses were measured
electronically. The coronal and axial sections were taken and subsequently examined.
Results: The mean depth, width, and height of sphenoid sinus in males on right side are 2.2458cm,
1.555cm, 1.9044 cm and on left side are 2.3877cm, 1.6519cm, 1.8613cm and in females on right side
are 2.0475cm, 1.6258cm,2.05cm and on left side are 2.066cm, 1.2891cm and 1.7941 cm respectively. We
noted single septum in 75?ses, double septa in 11.53?se, multiple septa in 5.76% cases and absence
of septa in 7.69% cases.
Conclusion: Anatomical knowledge of sphenoid sinus and its variations in size, pneumatization, intrasphenoid
sinus septations and its relationship with the surrounding vital structures is prime importance
before performing any endoscopic/open surgery involving skull base via trans-sphenoidal approach. Thus
preoperative CT is mandatory to avoid injuries to the closely related structures of the walls of the sinus.

Keywords: Sphenoid sinus, Morphometric study, Pattern, Septations.

Doi :-https://doi.org/10.18231/j.ijcap.2019.071