<unk> s may be initially identified as an unspecified kind of thyroid nodule. Follow-up examinations typically include an ultrasound if it is unclear whether or not there really is a nodule present. Once the presence of a nodule has been confirmed, the determination of the kind of thyroid nodule is done by fine needle aspiration biopsy.<unk> s are distinguished by an apparently gelatinous mass of<unk>  both surrounding and contained within follicular cells.<unk> s are not surrounded by a fibrous capsule of compressed tissue. However, they are surrounded by flattened epithelial cells. Both the number of cells and the type of<unk>  may vary considerably.
Colloid nodule
Cold nodule
Sister Mary Joseph nodule
Ground-glass opacity
Vocal cord nodule
Rokitansky nodule
Peribronchial cuffing
Lung nodule