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Correlating the Bethesda System for Reporting Thyroid Cytopathology with Histology and Extent of Surgery : A Review of 21,746 Patients from Four Endocrine Surgery Registries Across Two Continents

Inabnet III, William B. ; Palazzo, Fausto ; Sosa, Julie Ann ; Kriger, Joshua ; Aspinall, Sebastian ; Barczynski, Marcin ; Doherty, Gerard ; Iacobone, Maurizio ; Nordenstrom, Erik LU and Scott-Coombes, David , et al. (2019) In World Journal of Surgery
Abstract

Background: The Bethesda system for cytopathology (TBSRTC) is a 6-tier diagnostic framework developed to standardize thyroid cytopathology reporting. The aim of this study was to determine the risk of malignancy (ROM) for each Bethesda category. 

Methods: Thyroidectomy-related data from 314 facilities in 22 countries were entered into the following outcome registries: CESQIP (North America), Eurocrine (Europe), SQRTPA (Sweden) and UKRETS (UK). Demographic, cytological, pathologic and extent of surgery data were mapped into one dataset and analyzed. 

Results: Out of 41,294 thyroidectomy patient entries from January 1, 2015, to June 30, 2017, 21,746 patients underwent both thyroid FNA and surgery. A comparison of cytology and... (More)

Background: The Bethesda system for cytopathology (TBSRTC) is a 6-tier diagnostic framework developed to standardize thyroid cytopathology reporting. The aim of this study was to determine the risk of malignancy (ROM) for each Bethesda category. 

Methods: Thyroidectomy-related data from 314 facilities in 22 countries were entered into the following outcome registries: CESQIP (North America), Eurocrine (Europe), SQRTPA (Sweden) and UKRETS (UK). Demographic, cytological, pathologic and extent of surgery data were mapped into one dataset and analyzed. 

Results: Out of 41,294 thyroidectomy patient entries from January 1, 2015, to June 30, 2017, 21,746 patients underwent both thyroid FNA and surgery. A comparison of cytology and surgical pathology data demonstrated a ROM for Bethesda categories 1 to 6 of 19.2%, 12.7%, 31.9%, 31.4%, 77.8% and 96.0%, respectively. Male patients had a higher rate of malignancy for every Bethesda category. Secondary analysis demonstrated a high ROM in male patients with Bethesda 3 category aged 31–35 years (52.1%, 95% confidence interval (CI) 37.9–66.2%), aged 36–40 years (55.9%, 95% CI 39.2–72.6%) and aged 41–45 years (46.9%, 95% CI 33–60.9%). Patients with Bethesda 5 and 6 scores were more likely to undergo total thyroidectomy (65.9% and 84.6%); for patients with Bethesda scores 2 and 3, a higher percentage of females underwent total thyroidectomy compared to males in spite of a higher ROM for males. 

Conclusions: These data demonstrate that Bethesda categories 1–4 are associated with a higher ROM compared to the first edition of TBSRTC, especially in male patients, and validate findings from the second edition of TBSRTC.

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published
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in
World Journal of Surgery
publisher
Springer
external identifiers
  • pmid:31690953
  • scopus:85074841719
ISSN
0364-2313
DOI
10.1007/s00268-019-05258-7
language
English
LU publication?
yes
id
be5c578e-2f23-472c-936f-9bfff29b5d0e
date added to LUP
2019-12-05 09:39:49
date last changed
2024-07-11 08:53:55
@article{be5c578e-2f23-472c-936f-9bfff29b5d0e,
  abstract     = {{<p>Background: The Bethesda system for cytopathology (TBSRTC) is a 6-tier diagnostic framework developed to standardize thyroid cytopathology reporting. The aim of this study was to determine the risk of malignancy (ROM) for each Bethesda category. </p><p>Methods: Thyroidectomy-related data from 314 facilities in 22 countries were entered into the following outcome registries: CESQIP (North America), Eurocrine (Europe), SQRTPA (Sweden) and UKRETS (UK). Demographic, cytological, pathologic and extent of surgery data were mapped into one dataset and analyzed. </p><p>Results: Out of 41,294 thyroidectomy patient entries from January 1, 2015, to June 30, 2017, 21,746 patients underwent both thyroid FNA and surgery. A comparison of cytology and surgical pathology data demonstrated a ROM for Bethesda categories 1 to 6 of 19.2%, 12.7%, 31.9%, 31.4%, 77.8% and 96.0%, respectively. Male patients had a higher rate of malignancy for every Bethesda category. Secondary analysis demonstrated a high ROM in male patients with Bethesda 3 category aged 31–35 years (52.1%, 95% confidence interval (CI) 37.9–66.2%), aged 36–40 years (55.9%, 95% CI 39.2–72.6%) and aged 41–45 years (46.9%, 95% CI 33–60.9%). Patients with Bethesda 5 and 6 scores were more likely to undergo total thyroidectomy (65.9% and 84.6%); for patients with Bethesda scores 2 and 3, a higher percentage of females underwent total thyroidectomy compared to males in spite of a higher ROM for males. </p><p>Conclusions: These data demonstrate that Bethesda categories 1–4 are associated with a higher ROM compared to the first edition of TBSRTC, especially in male patients, and validate findings from the second edition of TBSRTC.</p>}},
  author       = {{Inabnet III, William B. and Palazzo, Fausto and Sosa, Julie Ann and Kriger, Joshua and Aspinall, Sebastian and Barczynski, Marcin and Doherty, Gerard and Iacobone, Maurizio and Nordenstrom, Erik and Scott-Coombes, David and Wallin, Goran and Williams, Lauren and Bray, Rachel and Bergenfelz, Anders}},
  issn         = {{0364-2313}},
  language     = {{eng}},
  publisher    = {{Springer}},
  series       = {{World Journal of Surgery}},
  title        = {{Correlating the Bethesda System for Reporting Thyroid Cytopathology with Histology and Extent of Surgery : A Review of 21,746 Patients from Four Endocrine Surgery Registries Across Two Continents}},
  url          = {{http://dx.doi.org/10.1007/s00268-019-05258-7}},
  doi          = {{10.1007/s00268-019-05258-7}},
  year         = {{2019}},
}