Sjögren's disease & overlap diseases

Ultrasound-guided core needle biopsy and incisional biopsy of the parotid gland are comparable in diagnosis of primary Sjögren’s syndrome

Rheumatology (Oxford)Published Diagnostic accuracy study

Authors' conclusion

US-guided CN biopsy of the parotid gland is at least equivalent to incisional biopsy of the parotid gland in the diagnostic work-up of pSS.

Study context

Population
Patients with suspected or confirmed pSS from the Belgian Sjögren's Syndrome Transition Trial (BeSSTT)19 interpretable
Participants
20 patients
Comparison
US-guided core needle parotid biopsy vs incisional parotid biopsy
Outcome
Concordance between paired biopsies for FS ≥1, germinal centres and lymphoepithelial lesions
Methodological detailsproof-of-concept, paired biopsies, consecutive cohort
  • Proof-of-concept
  • Paired biopsies
  • Consecutive cohort

Performance

As reported in the abstract

Concordance of paired biopsies ≥4 mm²

Concordance for focus score (FS) ≥ 1 (paired biopsies ≥4 mm²)

90%

Patients with ≥4 mm² salivary gland tissue by both techniques

14

Of 3 interpretable incisional biopsies paired with US-guided CN <4 mm², perfect concordance

2 of 3

Further findings

Sensitivity of FS ≥ 1 or germinal centres, including biopsies <4 mm²

Sensitivity

Original publication

Ultrasound-guided core needle biopsy and incisional biopsy of the parotid gland are comparable in diagnosis of primary Sjögren’s syndrome. Rheumatology (Oxford). Published 27 December 2022. doi:10.1093/rheumatology/keac714

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