Difference between revisions of "Thyroid cancer staging"
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===Lymph nodes=== | |||
{| class="wikitable sortable" | |||
!N stage | |||
!Criteria | |||
!Comment | |||
|- | |||
| pN0 | |||
| negative for lymph node metastasis | |||
| | |||
|- | |||
| pN1a | |||
| metastasis to level IV | |||
| level IV = pretracheal, paratracheal, prelaryngeal/Delphian, perithyroidal | |||
|- | |||
| pN1b | |||
| metastasis to level I, II, III, IV, V, or retropharyngeal, mediastinal lymph nodes (VII) | |||
| | |||
|} | |||
Note: | |||
*Level IV = central neck dissection. | |||
==See also== | ==See also== | ||
*[[Thyroid gland]]. | *[[Thyroid gland]]. |
Revision as of 13:34, 13 November 2015
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 | |
pT3 | >4 cm and limited to thyroid or "minimal" extrathyroidal extension | "minimal" extrathyroidal extension = sternothyroid m. or perithyroidal tissue | |
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 IV | level IV = pretracheal, paratracheal, prelaryngeal/Delphian, perithyroidal |
pN1b | metastasis to level I, II, III, IV, V, or retropharyngeal, mediastinal lymph nodes (VII) |
Note:
- Level IV = central neck dissection.