FNAC can not diagnose
Papillary carcinoma of thyroid
Follicular carcinoma of thyroid
Anaplastic carcinoma of thyroid
Medullary carcinoma of thyroid
FNAC helps in diagnosis of-

Papillary carcinoma
Medullary carcinoma
Anaplastic carcinoma
Colloid nodules
Thyroiditis

FNAC cannot diagnose follicular carcinoma and Hurthle carcinoma