Diseases of para nasal sinuses and rhino sinusitis are fairly common condition affecting 21 to 40 age group i.e. 63.5% of total population in the present study. Computed tomography is of gold standard method and has fundamental role in Radiological investigation of para nasal sinuses either for diagnosis of sinonasal lesion or pre and post-surgical assessment. It is having capability in delineating the anatomical variants in paranasal sinuses so as to protect essential structures around paranasal sinuses from any hydrogenic injuries and preventing the recurrent diseases from extramural cells. It is of Paramount importance that computed tomography of paranasal sinuses in three dimensions of axial coronal and sagittal plane has to be acquired and adequately reviewed prior to functional endoscopic sinus surgery or other skull base surgeries. Awareness of possibility of such variation helps in making therapeutic decisions. The knowledge regarding the presence of extended pneumatization of frontal sinus into crista- galli, sphenoid sinus into greater wing and clinoid are important in skull base and orbital apex surgeries where delicate neural tissues and nerves are at risk of iatrogenic injuries. Similarly dehiscence of vidian nerve, infraorbital nerve predispose above structures to injury while sinus clearance in functional endoscopic sinus surgery. So keeping in mind of all related complication and aiming for proper precaution, the knowledge of Anatomy of the paranasal Sinuses are essential in this era of functional endoscopic sinus surgeries. The present study will help to understand the clinical significance of Anatomical variation of paranasal sinuses and also helpful to locate the normal anatomy of paranasal sinuses on computed tomography. This study is prospective observational study and conducted in the Department of Anatomy and Radio diagnosis, Government Medical College and Hospital, Aurangabad. The study was performed on randomly selected 200 human adult male and female patients admitted in the hospital with proper applicable inclusion and exclusion criteria. The findings of the present study was compared with those of previous studies and found important in aspects of skilled paranasal surgeries and for paramount diagnosis.
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