Histopathological analysis.
| Histopathological Findings | No. Biopsies |
|---|---|
| Normal synovium | 4 |
| Inflamed synovium | 50 |
| Cell infiltrate: | |
| Lymphocytes | 50 |
| Plasma cells | 22 |
| Neutrophils | 24 |
| Specific lesions | 8 |
| Villonodular synovitis, shoulder and knee | 2 |
| Infectious arthritis* | 2 |
| Amyloid arthritis, knee | 1 |
| Articular localization of mantle B cell lymphoma, ankle | 1 |
| Gout, first MTP | 1 |
| Osteochondromatosis, knee | 1 |
| Failure | 14 |
↵* Two infectious arthritis sites (hip, ankle) treated on typical histological aspect with no relapse after 6 weeks of empiric antibiotics. MTP: metatarsophalangeal.