The SCTC is biologically aggressive malignant neoplasm which is associated with rapid growth of neck mass followed by infiltration of thyroid-adjacent structures. Patients usually demonstrate the dysphagia, dyspnea, and voice changes, as well as local pain in the neck. FNAC Ultrasound-guided FNAC should be performed for verification of SCTC. Radiological examination There are no specific radiological tests for SCTC verification. However these tests might be useful for identification of tumor borders and in planning of surgery. Markers Immunohistochemistry is performed as additional test. The strong positive expression of cytokeratin 19 was shown in primary SCTC, and negative in metastatic SCTC.
Squamous-cell thyroid carcinoma
Thyroid lymphoma
Anaplastic thyroid cancer
Papillary thyroid cancer
Medullary thyroid cancer
Follicular thyroid cancer
Poorly differentiated thyroid cancer
Thyroid adenoma