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Published in: Langenbeck's Archives of Surgery 4/2021

01-06-2021 | Hemithyroidectomy | Original Article

Risk factors for hypothyroidism and thyroid hormone replacement after hemithyroidectomy in papillary thyroid carcinoma

Authors: Song Jae Lee, Chang Myeon Song, Yong Bae Ji, Yun Young Choi, Young Seok Sohn, Jung Hwan Park, Dong Sun Kim, Kyung Tae

Published in: Langenbeck's Archives of Surgery | Issue 4/2021

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Abstract

Purpose

Thyroid lobectomy is now preferred over total thyroidectomy to preserve thyroid function and reduce complications in patients with low-risk papillary thyroid carcinoma (PTC). One inevitable consequence of thyroidectomy includes hypothyroidism. This study aimed to evaluate the risk factors for hypothyroidism and thyroid hormone replacement after hemithyroidectomy in patients with PTC.

Methods

We retrospectively studied 353 patients with PTC who underwent hemithyroidectomy with or without central neck dissection from January 2012 to January 2019. We excluded patients who had hypo- or hyperthyroidism preoperatively and those who underwent total or subtotal thyroidectomy. We analyzed various risk factors related to postoperative hypothyroidism and thyroid hormone supplementation.

Results

Of the patients, 54.7% showed hypothyroidism after hemithyroidectomy (n=193 with n=157, subclinical hypothyroidism; n=36, overt hypothyroidism). Ninety-one percent of postoperative hypothyroidism cases developed within 7 months postoperatively. Eventually, 43.1% (n=152) of patients received levothyroxine after hemithyroidectomy. Preoperative high thyroid-stimulating hormone (TSH) level and low free thyroxine (fT4) level were significantly associated with postoperative hypothyroidism and the need for thyroid hormone supplementation postoperatively.

Conclusion

Preoperative TSH and fT4 levels are predictive risk factors of hypothyroidism and need for supplementation of levothyroxine after hemithyroidectomy in patients with PTC. Finally, approximately 43% of patients need levothyroxine supplementation after hemithyroidectomy, and individual preoperative counseling is necessary for these patients.
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Metadata
Title
Risk factors for hypothyroidism and thyroid hormone replacement after hemithyroidectomy in papillary thyroid carcinoma
Authors
Song Jae Lee
Chang Myeon Song
Yong Bae Ji
Yun Young Choi
Young Seok Sohn
Jung Hwan Park
Dong Sun Kim
Kyung Tae
Publication date
01-06-2021
Publisher
Springer Berlin Heidelberg
Published in
Langenbeck's Archives of Surgery / Issue 4/2021
Print ISSN: 1435-2443
Electronic ISSN: 1435-2451
DOI
https://doi.org/10.1007/s00423-021-02189-7

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