Sjögren's disease & overlap diseases

Ultra-high frequency ultrasound of labial salivary glands in Sjögren’s disease: diagnostic accuracy and patient stratification

RMD OpenPublished Diagnostic accuracy study

Authors' conclusion

UHFUS of LSGs is a promising diagnostic tool in SjD when biopsy is not feasible.

Study context

Population
Patients with suspected Sjögren's disease undergoing ultra-high frequency ultrasound (UHFUS) of labial salivary glands (LSGs)
Participants
270 patients
Comparison
UHFUS of labial salivary glands for classification of Sjögren's disease (SjD) vs Sicca
  • SjDn = 136
  • Siccan = 134reference
Outcome
Classification accuracy of UHFUS of LSGs using GS and CD

Performance

As reported in the abstract

Classification accuracy, GS ≥2 (optimal cut-off)

Grey Scale (GS) ≥2 sensitivity

66.2%

GS ≥2 specificity

84.3%

GS Score 3 specificity

98.5%

Further findings

GS in ACR/EULAR criteria in place of biopsy

AUC
0.945

Stratification using GS, GS+colour Doppler (CD) and SSA status

More than 75% of patients classified with accuracy of 94%

Age-related variability

GS classification accuracy varied with age, CD remained stable

Original publication

Ultra-high frequency ultrasound of labial salivary glands in Sjögren’s disease: diagnostic accuracy and patient stratification. RMD Open. Published 3 July 2026. doi:10.1136/rmdopen-2026-006906

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