ROLE OF NECK IMAGING REPORTING AND DATA SYSTEM IN PREDICTION OF RESIDUAL OR RECURRENT HEAD AND NECK CANCERS IN POST-TREATMENT PATIENTS BY CONTRAST-ENHANCED COMPUTED TOMOGRAPHY

In the Neck imaging and reporting data systems( NIRADS system) , both the primary tumour and neck sites are independently assessed for suspicion of cancer and assigned a numerical category based on imaging features. this study aims to evaluate the role/ the diagnostic accuracy of ( NIRADS system) in the prediction of residual or recurrent head and neck cancers in post-treatment patients by CECT with the objectives to predict the residual or recurrent head and neck cancers in post-treatment patients based on 3 month follow up CECT scan and assign NIRADS category. This study concluded that there was a signicant association between recurrence and primary/ nodal/ combined tumour site NIRADS on 6 months of follow-up clinical, pathological and /or CECT scans.NIRADS > 3 had the overall highest PPV, NPV and diagnostic accuracy. The performance of NIRADS was good, demonstrating signicant discrimination between groups, with overall recurrence rates.