FNAC is useful in all except: March 2007, March 2012

Ans. A: Follicular carcinoma Thyroid conditions which can be diagnosed by FNAC include : Colloid nodules Thyroiditis Papillary carcinoma Medullary carcinoma Anaplastic carcinoma Lymphoma FNAC cannot distinguish between a benign follicular adenoma and follicular carcinoma, as this distinction is between is dependent not on cytology but on histological criteria, which include capsular and vascular invasion.