thyroid


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  • Normal

  • Non-neoplastic

  • WHO neoplasms

  • TNM (useful for grossing)

    • m: multifocal
    • T1: <= 2cm
    • T2: 2-4cm
    • T3: > 4cm or minimal extrathyroid extension
      • sternohyoid muscle
      • perithyroid soft tissue
    • T4a
      • intrathyroid anaplastic carcinoma
      • subcutaneous soft tissue invasion
      • larynx
      • trachea
      • esophagus
      • recurrent laryngeal nerve
    • T4b
      • extrathyroidal anaplastic carcinoma
      • invades prevertebral fascia
      • encases carotid artery
      • encases mediastinal vessels
    • regional nodes: central compartment, lateral cervical, upper mediastinal
    • N1: regional node metastasis
    • N1a: level VI metastasis
      • pretracheal
      • paratracheal
      • prelaryngeal/Delphian
    • N1b: cervical or superior mediastinal nodes