The Role of Fine Needle Aspiration Cytology in The Diagnosis and Management of Thyroid Diseases
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Fine needle aspiration (FNA) cytology of thyroid gland was performed in 100 patients. Twenty five patients had undergone surgery (25%) subsequent to a one-time FNA cytology. FNAC diagnoses included 75% benign cases (43% colloid goitre, 30% cystic goitre and 2% thyroiditis), 4% malignant and 6% cellular cases. Fifteen per cent (15%) of the specimens were inadequate. When compared with clinical diagnosis based on non-invasive investigations, total agreement of FNAC and clinical diagnosis was achieved in 70% of cases. With histological diagnosis; there was 2 cases false negative FNAC diagnoses and 3 cases false positive results. FNAC had an essential role in the diagnosis and management of 13% of our patients, a confirmatory role in 70% of patients, a noncontributory role in 15% when specimens were inadequate and was misleading in 2% when results were false negative. From these results, we conclude that FNAC has a reliable role in the clinical management of thyroid diseases.