Abstract
Purpose
To explore the effects of initial radioiodine therapy on parathyroid function among postoperative papillary thyroid cancer (PTC) patients.
Methods
Postoperative PTC patients who were admitted in our department from April 2018 to April 2019 were recruited. Patients were divided into two groups: Group A, who underwent surgery and initial radioiodine therapy in our hospital, and Group B, who did not receive radioiodine therapy after surgery. The levels of serum calcium, magnesium, phosphorus, parathyroid hormone (PTH), and 25 hydroxyvitamin D3 were collected. Data were analyzed by SPSS 25.0.
Results
A total of 252 patients were included. Between the two groups, no significant difference of PTH in 6th, 9th, and 12th month was found during postoperative follow-up (p = 0.493, p = 0.202, p = 0.814). No significant difference of PTH was found after stratifying Group A according to 131I dosage (p = 0.751 for 6th month after operation, p = 0.130 for 9th month after operation, p = 0.683 for 12th month after operation), interval time between surgery and radioiodine therapy (p = 0.522 for 3rd day after 131I therapy, p = 0.184 for 9th month after operation, p = 0.311 for 12th month after operation), and ratio of parathyroid autotransplantation (p = 0.545 for 3rd day after 131I therapy, p = 0.485 for 6th month after operation, p = 0.201 for 9th month after operation, p = 0.146 for 12th month after operation).
Conclusions
Initial radioiodine therapy following PTC surgery had no significant adverse effect on parathyroid function in the short term. However, physicians should inform patients of possible risks of abnormal parathyroid function prior to RAI therapy, and parathyroid function was periodically reviewed after RAI therapy.
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Data availability
All data were collected retrospectively from clinical database of our center. We declare the authenticity and transparency of the data.
Code availability
All statistical analyses were performed using IBM SPSS Statistics version 25.0 for Windows (IBM Corp., Armonk, NY).
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Study conception and design: Y.F., J.Z., and A.S.; acquisition of data: Y.F. and Y.Q. Analysis and interpretation of data: Y.F. and Z.X.; drafting of manuscript: Y.F., Y.Q., Z.X., W.Z. Critical revision of manuscript: J.Z., and A.S.
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Ethical approval was waived by the local Ethics Committee of Sichuan University in view of the retrospective nature of the study and all the procedures being performed were part of the routine care.
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Fei, Y., Qiu, Y., Xing, Z. et al. The effects of radioiodine therapy on parathyroid function among patients with papillary thyroid cancer: a retrospective cohort study. Endocrine 70, 426–434 (2020). https://doi.org/10.1007/s12020-020-02429-8
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DOI: https://doi.org/10.1007/s12020-020-02429-8