Difference between revisions of "Thyroid cancer staging"
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* | *Central neck dissection = level VI and VII<ref>{{cite journal |authors=Giugliano G, Proh M, Gibelli B, Grosso E, Tagliabue M, De Fiori E, Maffini F, Chiesa F, Ansarin M |title=Central neck dissection in differentiated thyroid cancer: technical notes |journal=Acta Otorhinolaryngol Ital |volume=34 |issue=1 |pages=9–14 |date=February 2014 |pmid=24711677 |doi= |url=}}</ref> | ||
==See also== | ==See also== | ||
Revision as of 13:34, 7 June 2022
Thyroid cancer staging is done with the TNM staging system.
TNM staging system
Tumour stage not including anaplastic carcinoma
| T stage | Size/criteria | Other requirements | Comment |
|---|---|---|---|
| pT1a | 1 cm or less | limited to thyroid | very common |
| pT1b | >1 cm and <=2 cm | limited to thyroid | |
| pT2 | >2 cm and <=4 cm | limited to thyroid | |
| pT3a | >4 cm | limited to thyroid | changed from AJCC 7th Ed. |
| pT3b | extension into strap muscles | strap muscles include: sternothyroid m., sternothyroid, thyrohyoid, omohyoid | changed from AJCC 7th Ed. |
| pT4a | any size | any of the following: subcutaneous tissue, trachea, esophagus, larynx, recurrent laryngeal nerve | |
| pT4b | any size | any of the following: mediastinal vessels, encasing carotid artery, prevertebral fascia |
Lymph nodes
| N stage | Criteria | Comment |
|---|---|---|
| pN0 | negative for lymph node metastasis | |
| pN1a | metastasis to level VI or VII | level VI = pretracheal, paratracheal, prelaryngeal/Delphian, perithyroidal; VII = mediastinal lymph nodes |
| pN1b | metastasis to level I, II, III, IV, V, or retropharyngeal | (level VII changed to pN1a in AJCC 8th Ed.) |
Note:
- Central neck dissection = level VI and VII[1]