Whipple's disease is a chronic systemic infection caused by ubiquitous bacterium Tropheryma wipplei on a genetic predisposition which should be considered in patients with recurrent episodes of seronegative arthritis, erosive or not, or inflammatory low back pain, chronic diarrhea, persistent fever, unexplained neurological signs, uveitis, endocarditis, and epithelioid granuloma. Laboratory tests may show malabsorption, erythrocyte sedimentation rate and C-reactive protein elevation, anemia, thrombocytosis, eosinophilia and lymphopenia. None of theses findings is specific and most patients have arthritis or low back pain mimicking rheumatoid arthritis and spondyloarthritis. As the disease is rare, chance for positive polymerase chain reaction testing for Tropheryma whipplei is low in this context.
Study Type
OBSERVATIONAL
Enrollment
267
CHU d'ANGERS
Angers, France
CHRU de Brest
Brest, France
CH le MAns
Le Mans, France
CHU de Nantes
Nantes, France
CH d'ORLEANS
Orléans, France
CHU de POITIERS
Poitiers, France
CHU de Rennes
Rennes, France
CHU de Tours
Tours, France
Number of patients diagnosed as whipple's disease
Diagnosis of Whipple's disease based on * at least one suggestive clinical finding * at least one test detecting T. Whipplei * diagnosis made by a specialist * a dramatic and persistent response to antibiotic therapy * Hydroxychloroquine 200mgx2 plus Doxycycline 100mgx2 * or trimethoprim/sulfamethoxazole 800/160mg x2
Time frame: Day 0 ( Date of diagnostic)
Number of test performed in each centre
Number of diagnoses according to tests Patients will be divided into three groups Classic Whipple's disease (CWD), defined as : * duodenal biopsy positive by PAS/immunohistochemistry * or blood positive by PCR Focal Whipple's disease (FWD) * joint fluid positive by PCR * but duodenal biopsy negative by PAS/immunohistochemistry Chronic T. whipplei-associated arthritis (CTWA): chronic arthritis and * duodenal biopsy, stool, or saliva positive by PCR * duodenal biopsy negative by PAS/immunohistochemistry * joint fluid negative by PCR
Time frame: Day 0 (Date of diagnostic)
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