Endocrine oncology

Synergy of Nodal Factors in Predicting Recurrence After Treatment of N1b Papillary Thyroid Carcinoma

J Clin Endocrinol MetabPublished Retrospective cohort study

Authors' conclusion

Nodal factors have synergistic effect in predicting recurrence in cN1b PTC patients. Increasing lymph nodes harvest may only decrease recurrence in patients without gENE, while not in gENE patients.

Study context

Population
Patients who underwent surgery for clinical N1b papillary thyroid carcinoma (PTC), 2013 to 2017
Participants
1,067 patients
Exposure
Nodal factors and their interaction in predicting recurrence
Outcome
All site and nodal recurrence

Main finding

As reported in the abstract

Largest dimension >3 cm, all site recurrence, HR
2.58 (1.67-4.00) (95% CI)
gENE, all site recurrence, HR
1.87 (1.26-3.01) (95% CI)
LNR >0.21, all site recurrence, HR
1.68 (1.11-2.42); all P < .01 (95% CI)
Largest dimension >3 cm, nodal recurrence, HR
2.63 (1.67-4.13) (95% CI)
gENE, nodal recurrence, HR
1.90 (1.15-3.12) (95% CI)
LNR >0.21, nodal recurrence, HR
1.76 (1.17-2.66); all P < .01 (95% CI)
LNR × gENE interaction, all site recurrence
P for interaction = .009
LNR × gENE interaction, nodal recurrence
P for interaction = .02

Observational data: associations, not effects.

Further findings

LNR and recurrence, stratified by gENE

Without gENE: LNR, all site recurrence, HR
2.41 (1.50-3.87) (95% CI)
Without gENE: LNR, nodal recurrence, HR
2.51 (1.52-4.14); all P < .001 (95% CI)
With gENE: LNR, all site recurrence, HR
0.81 (0.43-1.54), P = .53 (95% CI)
With gENE: LNR, nodal recurrence, HR
0.85 (0.43-1.67), P = .64 (95% CI)

Original publication

Synergy of Nodal Factors in Predicting Recurrence After Treatment of N1b Papillary Thyroid Carcinoma. J Clin Endocrinol Metab. Published 15 May 2024. doi:10.1210/clinem/dgae329

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