Spinal versus conventional fine needle for ultrasound-guided thyroid nodule biopsy: a protocol for a randomised clinical trial

Tobias Vennervald Andersen, Finn Noe Bennedbæk, Jens Pedersen, Marie Rosland Rosenørn, Katalin Kiss, Giedrius Lelkaitis, Luise Andersen, Laszlo Hegedüs, Anne Fog Lomholt, Christoffer Holst Hahn, Gitte Bjørn Hvilsom, Preben Homøe, Tobias Todsen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

INTRODUCTION. Thyroid nodules are very common and constitute an increasing clinical challenge since improved imaging capabilities and utilisation have led to a higher number of incidental findings. Ultrasoundguided fine-needle aspiration biopsy (FNAB) is the standard diagnostic tool in the work-up of thyroid nodules suspected of malignancy. Non-diagnostic results remain common and require repeated FNAB, leading to increased costs and delayed treatment of thyroid diseases, including treatment of thyroid cancer. If cytological diagnoses cannot be achieved, surgery may be warranted, which may potentially lead to overtreatment. Optimisation of the FNAB procedure is therefore essential. Spinal needles with a stylet have been found to lead to fewer non-diagnostic results, but studies on the subject are few.

METHODS. This is a multicentre, two-arm, randomised clinical trial. Adults with thyroid nodules suspected of malignancy will be included consecutively. A total of 350 patients will be assigned randomly 1:1 to have a FNAB with either a spinal (25G) or a conventional (25G) needle. The primary outcome is the rate of diagnostic cytological samples according to the Bethesda system. Secondary outcomes are patient-experienced pain, complication rate and sensitivity and specificity.

CONCLUSIONS. This trial will explore whether FNAB from thyroid nodules employing spinal needles compared with conventional fine needles improves diagnostic results, thereby providing evidence-based recommendations for a future choice of the FNAB needle. Secondary outcomes are patient-experienced pain, complication rate and sensitivity and specificity.

Original languageEnglish
Article number03220165
JournalDanish Medical Journal
Volume69
Issue number8
Number of pages9
ISSN2245-1919
Publication statusPublished - 2022

Keywords

  • ASPIRATION-CYTOLOGY
  • MANAGEMENT

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