Difference between revisions of "Thyroid cancer staging"
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(Created page with "'''Thyroid cancer staging''' is done with the TNM staging system. ==TNM staging system== ===Tumour stage ''not'' including ''anaplastic carcinoma''=== {| class="wikitable...") |
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|- | |- | ||
|pT1b | |pT1b | ||
| >1 cm and <2 cm | | >1 cm and <=2 cm | ||
| limited to thyroid | | limited to thyroid | ||
| | | | ||
|- | |- | ||
|pT2 | |pT2 | ||
| >2 cm and <4 cm | | >2 cm and <=4 cm | ||
| limited to thyroid | | limited to thyroid | ||
| | | | ||
|- | |- | ||
| | |pT3a | ||
| >4 cm | | >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 | |pT4a | ||
| any size | | any size | ||
| any of the following: subcutaneous tissue, trachea, esophagus, larynx, recurrent laryngeal nerve | | any of the following: subcutaneous tissue, [[trachea]], esophagus, larynx, recurrent laryngeal nerve | ||
| | | | ||
|- | |- | ||
| Line 39: | Line 44: | ||
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|} | |} | ||
===Lymph nodes=== | |||
{| class="wikitable sortable" | |||
!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<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== | ||
*[[Thyroid gland]]. | *[[Thyroid gland]]. | ||
*[[TNM staging system]]. | *[[TNM staging system]]. | ||
==References== | |||
{{Reflist|1}} | |||
[[Category:Thyroid gland]] | [[Category:Thyroid gland]] | ||
[[Category:Cancer staging]] | [[Category:Cancer staging]] | ||
Latest revision as of 13:35, 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]