Approach to Thyroid Nodule

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Causes of thyroid nodules

Approach to Thyroid Nodule

Type Etiologies 
Benign  
  • Cysts 
    • Simple 
    • Colloid 
    • Hemorrhagic 
  • Follicular adenomas 
    • Macrofollicular or microfollicular adenomas 
  • Hashimoto’s (chronic lymphocytic) thyroiditis 
  • Hurthle cell (oxyphil cell) adenomas 
  • Multinodular goiter 
Malignant 
  • Anaplastic carcinoma 
  • Follicular carcinoma 
  • Medullary carcinoma 
  • Metastatic carcinoma to thyroid (eg, renal cell, breast, etc.) 
  • Papillary carcinoma 
  • Primary thyroid lymphoma 
(Next Lesson) Initial evaluation of thyroid nodule
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