TO STUDY DIAGNOSTIC EFFICACY OF MULTIDETECTOR COMPUTED TOMOGRAPHY IN EVALUATION OF PARANASAL SINUS LESIONS

Abstract

Introduction: MDCT (Multidetector computed tomography) offers unique advantages over the single detector row CT, with its speed and isotropic resolutions of thin slices, improved temporal and spatial resolution. It clearly depicts the fine bony anatomy of osteomeatal unit which clinically one can easily missed, underestimated or sometimes overestimated the anatomical extent.

Aims And Objectives: To detect diagnostic efficacy of multidetector computed tomography in evaluation of paranasal sinus lesions.

Materials And Methods: This cross-sectional observational study was carried out on all out patients, inpatients and referral patients with clinically suspected paranasal sinus lesions in Geetanjali Medical College and Hospital during the period of 2 years.

Results: In our study, nasal discharge was seen in 56 patients, nasal obstruction in 67 patients, headache in 59 patients. In our study, epistaxis was seen in 49 patients. In our study, swelling of face was seen in 5 patients. The most common sinus affected was maxillary sinus. Nasal septum was deviated to right side in 19 patients, to left side in 33 patients and ‘S’ shaped deviation of nasal septum was seen in 2 patients. Detection of polyp CT had a sensitivity of 90%, specificity of 100%, PPV of 100%, NPV of 98.36%, Diagnostic accuracy of 98.57%. Detection of sinusitis CT had a sensitivity of 95.83%, specificity of 95.45%, PPV of 97.87%, NPV of 91.30%, Diagnostic accuracy of 95.71%.

Conclusion: This study proves the better sensitivity and specificity of CT in evaluation of various sinonasal pathologies in symptomatic patients for the diagnosis, staging and thereby better planning of management. CT is the best modality of choice for evaluating osteomeatal complex anatomy, variations and for assessing bony changes in various sinonasal diseases.