From: Synovial biopsy for establishing a definite diagnosis in undifferentiated chronic knee monoarthritis
Diagnosis | Synovial proliferation | Endothelial proliferation | Necrotic granuloma | Non-necrotic granuloma | Giant cells | Pannus formation | Neovascularization | Fibrosis | Hemosiderin deposition | Infiltrating cells |
---|---|---|---|---|---|---|---|---|---|---|
Non-specific synovitis | 49 (94%) | 51 (98%) | 0 (0%) | 2 (4%) | 3 (6%) | 37 (71%) | 48 (92%) | 45 (87%) | 4 (8%) | 43 (83%) |
Crystal disease | 1 (50%) | 1 (50%) | 0 (0%) | 0 (0%) | 0 (0%) | 1 (50%) | 1 (50%) | 1 (50%) | 1 (50%) | 1 (50%) |
Degenerative disease | 4 (80%) | 3 (60%) | 0 (0%) | 0 (0%) | 0 (0%) | 2 (40%) | 3 (60%) | 3 (60%) | 0 (0%) | 1 (20%) |
Infectious disease | 5 (83%) | 4 (67%) | 1 (17%) | 0 (0%) | 0 (0%) | 3 (50%) | 3 (50%) | 4 (67%) | 0 (0%) | 6 (100%) |
Infiltrative disease | 0 (0%) | 1 (100%) | 0 (0%) | 0 (0%) | 1 (100%) | 1 (100%) | 1 (100%) | 1 (100%) | 0 (0%) | 1 (100%) |
Neoplasm | 2 (40%) | 2 (40%) | 0 (0%) | 0 (0%) | 4 (80%) | 0 (0%) | 0 (0%) | 1 (20%) | 1 (20%) | 0 (0%) |
Rheumatoid arthritis | 8 (100%) | 8 (100%) | 0 (0%) | 0 (0%) | 0 (0%) | 8 (100%) | 8 (100%) | 7 (88%) | 1 (13%) | 7 (78%) |
Trauma | 1 (100%) | 1 (100%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 1 (100%) | 1 (100%) | 1 (100%) |