Many patients with papillary and follicular thyroid cancer do not show symptoms. Patients typically seek medical attention when they could see or feel a mass or lump (nodule) on the neck. Masses that ...

Schematic representation of thyroid cancer origin and its putative progression. Oncocytic adenoma and carcinoma are currently considered to be variants of follicular adenoma and carcinoma.

It is recommended that a minimum of two passes be made into various portions of the nodule to decrease sampling ... is more typical of a cyst of thyroid follicular origin. After aspiration ...

8 conventional or oncocytic follicular adenomas; 4 anaplastic carcinomas; 4 poorly differentiated carcinomas; 2 medullary carcinomas; 5 normal thyroid specimens; 5 hyperplastic nodules).