Comparative Study of Fine Needle Aspiration Cytology & Computerised Cytology Scan In Diagnosis of Extra Thyroidal Neck Masses
Keywords:
Extra thyroidal neck lesions, FNAC, Neck Swellings, CT scanAbstract
Objective: the present study was carried out to compare the utility of Fine Needle Aspiration Cytology (FNAC) Versus Computerised tomography (CT) scan in diagnosing extra thyroidal neck lesions. The sensitivity and specificity of both were calculated and analysed keeping histopathology as a gold standard. Material & Methods: the prospective study was conducted during July 2013 to September 2015 at a tertiary care hospital, Department of Pathology & Radiology. A total 100 cases were studied. Only those patients presented with extra thyroidal neck masses and who underwent both FNAC & CT procedure were selected for the study. Observation & Results: the highest incidence of neck masses was between age group 41 to 60 years with lymph node enlargement as the commonest mass. In the present study majority of the pathologies were malignant (50%) followed by inflammatory lesions 18%, benign 16% and congenital 16%. The majority of disparity in diagnosis was found in malignant lesions. FNAC revealed more specific diagnosis in case of malignancy. The sensitivity of FNAC was 96.3%, specificity 100% and diagnostic accuracy 96.9%, while CT had sensitivity of 94.4%, specificity 81.8% and diagnostic accuracy 92.3%. Conclusion: FNAC remains an upper hand on CT for diagnosis of extra thyroid neck masses, due to its easy availability, simplicity, low cost, reliability, minimally invasiveness with acceptable sensitivity and few complications. CT is essential in planning surgical approach and predicting prognosis especially in malignant lesions.
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