<unk>  poses a diagnostic and therapeutic challenge. This is because several manifestation patterns are similar to those of anaplastic thyroid cancer (ATC). Fine-needle aspiration (FNA) helps distinguish the two entities preoperatively. Histopathology The majority of<unk> s are non–Hodgkin's B-cell<unk> s; a minority exhibit properties of T-cell<unk> s . * Diffuse large B-cell<unk>  with marginal zone * Diffuse large B-cell<unk>  without marginal zone * Marginal zone В-cell<unk>  of mucosa-associated lymphoid tissue (MALT) * Follicular<unk>  Staging Staging of<unk>  is shown in the table below Stage Characteristics 1Е<unk>  is located within the thyroid 2Е<unk>  is located within the thyroid and regional lymph-nodes 3Е<unk>  is located at both sides of diaphragm 4Е Dissemination of<unk>
Thyroid lymphoma
Follicular thyroid cancer
Papillary thyroid cancer
Medullary thyroid cancer
Anaplastic thyroid cancer
Thyroid adenoma
Radiation-induced thyroiditis
Thyroid neoplasm