RESUMEN
Introduction: Pneumatization of the sphenoid sinus is highlyvariable and it depends on the position of the sinus in relationto the sella turcica. The pattern of pneumatization of sphenoidsinus significantly affects safe access to the sella. Pneumatizedsphenoid sinus may distort the anatomical configuration so ifunaware, accidental injury can occur during invasive surgicaltechnique.Material and methods: This cross sectional observationalwas conducted by Postgraduate Department of Anatomyin collaboration with Department of Radiodiagnosis andImaging, Government Medical College, Srinagar. Thisstudy was done on CT scan of 200 cases (120 males and 80females). Since the aim of our study was to evaluate normalvariation in pneumatization of sphenoid sinus, cases foundto harbor pathology or disease enough to distort the regionalanatomy were excluded from the study. Extent of sphenoidpneumatization in relation to pituitary fossa was studied insagittal plane and categorized as sellar, presellar and conchal.Results were categorized for males and females separately.RESULTS: In our study of 200 cases, sellar type of sphenoidsinus pneumatization was majority accounting 180 (90%)while 18 (9%) were presellar and 2 (1%) were of chonchaltype. Both cases of chonchal type were males.Conclusion: The study was performed to demonstratesurgically dangerous variations of sphenoid sinuspneumatization for the safe removal of the intrasphenoid andpituitary lesions, with the goal of preventing complicationsand achieving the best possible results.