PMID- 23069002 OWN - NLM STAT- MEDLINE DCOM- 20130314 LR - 20170112 IS - 0392-856X (Print) IS - 0392-856X (Linking) VI - 30 IP - 6 DP - 2012 Nov-Dec TI - Minor salivary gland biopsy and Sjogren's syndrome: comparative analysis of biopsies among different Italian rheumatologic centers. PG - 929-33 AB - OBJECTIVES: The minor salivary gland biopsy (MSGB) is widely considered an important component of the diagnostic algorithm of primary Sjogren's syndrome (pSS) and is mentioned in all the classification criteria sets for the disease. The aim of this study, coordinated by the Italian Society of Rheumatology, was to verify the inter-observer agreement on the evaluation of MSGB among different experienced Italian rheumatologic centres, in order to better standardise the diagnostic methodology. METHODS: Seven centres participated in the study, providing a total of 50 MSGB samples. Each center blindly classified all the samples according to the Chisholm and Mason (CM) grading. The results were collected and analysed. RESULTS: The inter-observer agreement was satisfactory when the samples were stratified as consistent and non-consistent with the final diagnosis of pSS (median kappa =0.75; mean kappa =0.70). Nonetheless, significant discrepancies in the histopathologic evaluation of MSGB emerged when the agreement was assessed on the single scores. Considering the modal CM grading for each sample as the correct grading, upon re-examination, a potential bias in the final clinical diagnosis was detected in 7 out of 50 samples. CONCLUSIONS: This study has shown significant discrepancies in the evaluation of MSGB among different rheumatologic centres in the same country. Greater standardisation of the procedure is clearly necessary, both to improve the diagnostic performance and scientific communication. FAU - Tavoni, Antonio Gaetano AU - Tavoni AG AD - Clinical Immunology Unit, Department of Internal Medicine, University of Pisa, Pisa, Italy. a.tavoni@int.med.unipi.it FAU - Baldini, Chiara AU - Baldini C FAU - Bencivelli, Walter AU - Bencivelli W FAU - Cavazzini, Luigi AU - Cavazzini L FAU - Covelli, Michele AU - Covelli M FAU - De Vita, Salvatore AU - De Vita S FAU - Caporali, Roberto AU - Caporali R FAU - Gerli, Roberto AU - Gerli R FAU - Giansanti, Michele AU - Giansanti M FAU - Govoni, Marcello AU - Govoni M FAU - Donati, Valentina AU - Donati V FAU - Montecucco, Carlo Maurizio AU - Montecucco CM FAU - Morbini, Patrizia AU - Morbini P FAU - Pilato, Francesco Paolo AU - Pilato FP FAU - Resta, Leonardo AU - Resta L FAU - Scott, Cathryn Anne AU - Scott CA FAU - Mosca, Marta AU - Mosca M FAU - Vitali, Claudio AU - Vitali C FAU - Bombardieri, Stefano AU - Bombardieri S CN - Italian Study Group on Sjogren's Syndrome of the Italian Society of Rheumatology LA - eng PT - Comparative Study PT - Journal Article PT - Multicenter Study DEP - 20121217 PL - Italy TA - Clin Exp Rheumatol JT - Clinical and experimental rheumatology JID - 8308521 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - *Biopsy/standards MH - Female MH - Humans MH - Italy MH - Male MH - Middle Aged MH - Observer Variation MH - Predictive Value of Tests MH - Reproducibility of Results MH - Retrospective Studies MH - Rheumatology/*methods/standards MH - Salivary Glands, Minor/*pathology MH - Severity of Illness Index MH - Sjogren's Syndrome/*pathology MH - *Tertiary Care Centers/standards MH - Young Adult EDAT- 2012/10/17 06:00 MHDA- 2013/03/15 06:00 CRDT- 2012/10/17 06:00 PHST- 2012/09/24 00:00 [received] PHST- 2012/10/02 00:00 [accepted] PHST- 2012/10/17 06:00 [entrez] PHST- 2012/10/17 06:00 [pubmed] PHST- 2013/03/15 06:00 [medline] AID - 6518 [pii] PST - ppublish SO - Clin Exp Rheumatol. 2012 Nov-Dec;30(6):929-33. Epub 2012 Dec 17.