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The effects of the Union for International Cancer Control/American Joint Committee on Cancer Tumour, Node, Metastasis system version 8 on staging of differentiated thyroid cancer: a comparison to version 7
- Source :
- Clinical Endocrinology. 88:950-956
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- Objective To assess the changes resulting from the changes from UICC/AJCC TNM version 7 to version 8 and to subsequently determine whether TNM version 8 is an improvement compared to previous iterations of the TNM system and other staging systems for differentiated thyroid cancer (DTC) with regard to prognostic power. Design Database study of DTC patients treated in our centre between 1978 up to and including 1 July 2014. Results were compared to our previous comparison of prognostic systems using the same data set. Patients 2257 DTC patients. Measurements Staging in accordance with TNM 7 and TNM 8. Thyroid cancer-specific mortality; comparison was based on p-values of univariate Cox regression analyses as well as analysis of the proportion of variance explained (PVE). Results There is a redistribution from stage 3 to lower stages affecting 206 (9.1%) patients. DTC-related mortality according to Kaplan-Meier for younger and older patients in TNM 7 had a slightly lower prognostic power than that in accordance with TNM 8 (P = 8.0 10-16 and P = 1.5 10-21 , respectively). Overall staging is lower in 627/2257 (27.8%) patients. PVE (TNM 7: 0.29; TNM 8: 0.28) and the P-value of Cox regressions (TNM 7: P = 7.1*10-52 ; TNM 8: P = 3.9*10-49 ) for TNM version 8 are marginally lower than that for TNM version 7, but still better than for any other DTC staging system. Conclusion TNM 8 results in a marked downstaging of patients compared to TNM 7. Although some changes, like the change in age boundary, appear to be associated with an improvement in prognostic power, the overall effect of the changes does not improve the predictive power compared to TNM 7.
- Subjects :
- Adult
Male
Oncology
medicine.medical_specialty
Adolescent
Endocrinology, Diabetes and Metabolism
Thyroid Gland
030209 endocrinology & metabolism
Young Adult
03 medical and health sciences
0302 clinical medicine
Endocrinology
Older patients
Cancer control
Internal medicine
medicine
Humans
Thyroid Neoplasms
Stage (cooking)
Child
neoplasms
Staging system
Thyroid cancer
Aged
Neoplasm Staging
Aged, 80 and over
Tumour node metastasis
Proportional hazards model
business.industry
Middle Aged
Prognosis
medicine.disease
Explained variation
United States
digestive system diseases
stomatognathic diseases
Child, Preschool
Lymphatic Metastasis
030220 oncology & carcinogenesis
Female
business
Subjects
Details
- ISSN :
- 03000664
- Volume :
- 88
- Database :
- OpenAIRE
- Journal :
- Clinical Endocrinology
- Accession number :
- edsair.doi.dedup.....60527533a1d1be277e0258371ac53878