Difference between revisions of "Thyroid cancer staging"
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| Line 25: | Line 25: | ||
|- | |- | ||
|pT3a | |pT3a | ||
| >4 cm | | >4 cm | ||
| | | limited to thyroid | ||
| changed from AJCC 7th Ed. | |||
|- | |- | ||
|pT3b | |pT3b | ||
| extension into strap muscles | | extension into strap muscles | ||
| strap muscles include: sternothyroid m., sternothyroid, thyrohyoid, omohyoid | | strap muscles include: sternothyroid m., sternothyroid, thyrohyoid, omohyoid | ||
| changed from AJCC 7th Ed. | |||
|- | |- | ||
|pT4a | |pT4a | ||
| Line 59: | Line 61: | ||
| pN1b | | pN1b | ||
| metastasis to level I, II, III, IV, V, or retropharyngeal | | metastasis to level I, II, III, IV, V, or retropharyngeal | ||
| | | (level VII changed to pN1a in AJCC 8th Ed.) | ||
|} | |} | ||
Note: | 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]