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Central lymph node dissection and permanent hypoparathyroidism after total thyroidectomy for papillary thyroid cancer : population-based study

Salem, F. A. LU ; Bergenfelz, A. LU ; Nordenström, E. LU and Almquist, M. LU (2021) In British Journal of Surgery 108(6). p.684-690
Abstract

Background: Papillary thyroid cancer is treated with total/near-total thyroidectomy (TT) with or without central lymph node dissection (CLND), depending on risk factors and tumour size. Balancing the risk of disease recurrence and surgical morbidity remains a challenge. A population-based nationwide study was undertaken to evaluate the risk of permanent hypoparathyroidism associated with CLND. Method: Data on patients with stage pT1–3 papillary thyroid cancer, who underwent TT with or without CLND between 1 July 2004 and 30 June 2014 were retrieved from the Scandinavian Quality Register for Thyroid, Parathyroid and Adrenal Surgery. Drug use was ascertained by cross-linking with the Swedish Prescribed Drug Register. Permanent... (More)

Background: Papillary thyroid cancer is treated with total/near-total thyroidectomy (TT) with or without central lymph node dissection (CLND), depending on risk factors and tumour size. Balancing the risk of disease recurrence and surgical morbidity remains a challenge. A population-based nationwide study was undertaken to evaluate the risk of permanent hypoparathyroidism associated with CLND. Method: Data on patients with stage pT1–3 papillary thyroid cancer, who underwent TT with or without CLND between 1 July 2004 and 30 June 2014 were retrieved from the Scandinavian Quality Register for Thyroid, Parathyroid and Adrenal Surgery. Drug use was ascertained by cross-linking with the Swedish Prescribed Drug Register. Permanent hypoparathyroidism was defined as treatment with active D vitamin or oral calcium drugs for more than 6 months after surgery. Data were analysed separately for all patients and those who underwent TT + CLND. Univariable and multivariable logistic regression analyses were done, yielding odds ratios (ORs) with 95 per cent confidence intervals. Results: A total of 722 patients were included in the study. Permanent hypoparathyroidism was more common in the TT + CLND group than the TT group: 30 of 265 patients (6·6 per cent) versus six of 457 (2·3 per cent) (P = 0·011). In multivariable logistic regression analysis, CLND was a risk factor for permanent hypoparathyroidism (OR 3·74, 95 per cent c.i. 1·46 to 9·59, based on use of combined therapy 6 months after surgery). In patients who had TT + CLND, node negativity was associated with a risk of permanent hypoparathyroidism (OR 3·08, 1·31 to 7·25). Conclusion: CLND is an independent risk factor for permanent hypoparathyroidism. Node negativity is associated with a higher risk of permanent hypoparathyroidism.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
British Journal of Surgery
volume
108
issue
6
pages
684 - 690
publisher
Oxford University Press
external identifiers
  • scopus:85090980244
  • pmid:32936933
ISSN
0007-1323
DOI
10.1002/bjs.12028
language
English
LU publication?
yes
id
e80de27f-8dd8-4d44-b119-8af6852b60a5
date added to LUP
2020-10-26 09:49:17
date last changed
2024-04-17 16:53:19
@article{e80de27f-8dd8-4d44-b119-8af6852b60a5,
  abstract     = {{<p>Background: Papillary thyroid cancer is treated with total/near-total thyroidectomy (TT) with or without central lymph node dissection (CLND), depending on risk factors and tumour size. Balancing the risk of disease recurrence and surgical morbidity remains a challenge. A population-based nationwide study was undertaken to evaluate the risk of permanent hypoparathyroidism associated with CLND. Method: Data on patients with stage pT1–3 papillary thyroid cancer, who underwent TT with or without CLND between 1 July 2004 and 30 June 2014 were retrieved from the Scandinavian Quality Register for Thyroid, Parathyroid and Adrenal Surgery. Drug use was ascertained by cross-linking with the Swedish Prescribed Drug Register. Permanent hypoparathyroidism was defined as treatment with active D vitamin or oral calcium drugs for more than 6 months after surgery. Data were analysed separately for all patients and those who underwent TT + CLND. Univariable and multivariable logistic regression analyses were done, yielding odds ratios (ORs) with 95 per cent confidence intervals. Results: A total of 722 patients were included in the study. Permanent hypoparathyroidism was more common in the TT + CLND group than the TT group: 30 of 265 patients (6·6 per cent) versus six of 457 (2·3 per cent) (P = 0·011). In multivariable logistic regression analysis, CLND was a risk factor for permanent hypoparathyroidism (OR 3·74, 95 per cent c.i. 1·46 to 9·59, based on use of combined therapy 6 months after surgery). In patients who had TT + CLND, node negativity was associated with a risk of permanent hypoparathyroidism (OR 3·08, 1·31 to 7·25). Conclusion: CLND is an independent risk factor for permanent hypoparathyroidism. Node negativity is associated with a higher risk of permanent hypoparathyroidism.</p>}},
  author       = {{Salem, F. A. and Bergenfelz, A. and Nordenström, E. and Almquist, M.}},
  issn         = {{0007-1323}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{684--690}},
  publisher    = {{Oxford University Press}},
  series       = {{British Journal of Surgery}},
  title        = {{Central lymph node dissection and permanent hypoparathyroidism after total thyroidectomy for papillary thyroid cancer : population-based study}},
  url          = {{http://dx.doi.org/10.1002/bjs.12028}},
  doi          = {{10.1002/bjs.12028}},
  volume       = {{108}},
  year         = {{2021}},
}