Role of Ultrasound in Assessment of Malignant Risk Potentialof Thyroid Nodule Using TIRADS with Cytological Correlation.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 3
Abstract
Background And Objectives: Nearly twothird of the population show nodules in high resolution ultrasound of thyroid. Less than 10% of nodules are malignant. The reporting of such nodules is often subjective and does not guide proper management. To standardize the reporting, the concept of thyroid imaging reporting and data system (TIRADS) was developed. The present study aims to stratify the thyroid nodules based on key ultrasound features into various risk groups and assess their malignant potential. Methodology:This study has been done on 200 patients with thyroid nodules during a one year study period(2014-2015).These thyroid nodules were evaluated by ultrasonography and FNAC.Then the sonographic features and FNAC results were compared andanalysed. Results: Out of the 200 thyroid nodules, 140 nodules were included in TIRADS category 3. TIRADS category 4a, 4b and 5 had 12, 40, 8 thyroid nodules respectively. All category 3 nodules were proved as benign on FNAC. Malignant nodules were confirmed with increasing frequency from category 4a to 5, with 100% concordance for TIRADS category 5. Odds ratio for irregular margin,microlobulated margin, taller-than-wider shape, microcalcification, marked hypoechogenicity is 1.71, 24, 19.4, 20.35 and 47 respectively. Conclusion:The sonographic features like irregular margin, microlobulated margin, taller-than-wider shape, microcalcification and marked hypoechogenicity carries increased risk of thyroid malignancy and fine needle aspiration cytology is required only for the nodules which are included in TIRADS category 4a, 4b and 5.
Authors and Affiliations
Dr Thaiyalnayakis, DrMurali Nanjundan, Dr Sundari Natarajan
Keywords
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- EP ID EP600262
- DOI 10.9790/0853-1603104854.
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