PMID- 18438907 OWN - NLM STAT- MEDLINE DCOM- 20080617 LR - 20080527 IS - 0004-3591 (Print) IS - 0004-3591 (Linking) VI - 59 IP - 5 DP - 2008 May 15 TI - Safety and usefulness of minor salivary gland biopsy: retrospective analysis of 502 procedures performed at a single center. PG - 714-20 LID - 10.1002/art.23579 [doi] AB - OBJECTIVE: To analyze the safety of our biopsy technique and the effectiveness of minor salivary gland biopsy (MSGB) for the diagnosis of Sjogren's syndrome (SS) and amyloidosis. METHODS: We conducted a retrospective analysis of 452 patients with suspected SS and 50 with suspected amyloidosis and negative periumbilical fat aspiration analysis who underwent MSGB at a single center. Diagnostic evaluation for SS included Schirmer's test, unstimulated whole salivary flow, detection of antinuclear antibodies and anti-SSA/SSB, erythrocyte sedimentation rate, C-reactive protein, IgM rheumatoid factor, and serology for hepatitis C virus. For all biopsy samples, a cumulative focus score on multilevel sections was calculated. SS was diagnosed according to American-European Consensus Group (AECG) criteria. Histologic evaluation for amyloidosis was performed using Congo red staining and polarized-light microscopy. Adverse events were recorded on a questionnaire immediately after the procedure and 7 days, 14 days, and 6 months thereafter. RESULTS: Sixty-four patients (12.7%) reported transient adverse events: 40 paresthesias lasting <7 days, 17 paresthesias lasting <14 days, 27 cases of local swelling, and 8 external hematoma. One patient has had local paresthesia for 2 years. A total of 498 (99.2%) samples provided adequate material for histologic analysis. Of 452 patients evaluated for SS, 378 were finally evaluated. Ninety-three patients (24.5%) had a cumulative focus score > or =1, and 87 (94.5%) of 93 satisfied the AECG criteria. Classification of SS was possible for 124 (32.8%) of 378 patients. In 51 (41%) of 124, MSGB was essential to reach the number of criteria needed for classification. Of 50 patients evaluated for amyloidosis, 10 (20%) had positive Congo red staining. CONCLUSION: MSGB is a simple, safe, and reliable tool for the diagnosis of SS and amyloidosis, and therefore is suitable for more extensive application. FAU - Caporali, Roberto AU - Caporali R AD - Department of Rheumatology, University of Pavia, IRCCS San Matteo Foundation, Pavia, Italy. caporali@smatteo.pv.it FAU - Bonacci, Eleonora AU - Bonacci E FAU - Epis, Oscar AU - Epis O FAU - Bobbio-Pallavicini, Francesca AU - Bobbio-Pallavicini F FAU - Morbini, Patrizia AU - Morbini P FAU - Montecucco, Carlomaurizio AU - Montecucco C LA - eng PT - Journal Article PL - United States TA - Arthritis Rheum JT - Arthritis and rheumatism JID - 0370605 SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Amyloidosis/*pathology MH - Biopsy, Needle MH - Female MH - Humans MH - Male MH - Middle Aged MH - Retrospective Studies MH - Salivary Gland Diseases/*pathology MH - Salivary Glands/*pathology MH - Sjogren's Syndrome/*pathology EDAT- 2008/04/29 09:00 MHDA- 2008/06/18 09:00 CRDT- 2008/04/29 09:00 PHST- 2008/04/29 09:00 [pubmed] PHST- 2008/06/18 09:00 [medline] PHST- 2008/04/29 09:00 [entrez] AID - 10.1002/art.23579 [doi] PST - ppublish SO - Arthritis Rheum. 2008 May 15;59(5):714-20. doi: 10.1002/art.23579.