According to the American Joint Committee on Cancer (AJCC) there are 4 stages of<unk>  thyroid cancer based on the clinical features and findings on imaging. Each stage is assigned a letter and a number that designate the tumor size, number of lymph node regions involved, and metastasis.
Anaplastic thyroid cancer staging
Follicular thyroid cancer classification
Medullary thyroid cancer staging
Thyroid adenoma classification
Salivary gland tumor staging
Parathyroid adenoma classification
Salivary gland tumor fine-needle aspiration biopsy 
Salivary gland tumor surgery