Pathological diagnoses in cases where the fluid report was more specific than the biopsy report (n = 15)
| Fluid diagnosis | Biopsy diagnosis | Concordance |
|---|---|---|
| Osteoarthritis | Primary inflammatory arthritis | Discordant |
| Inflammatory arthritis? Viral | Primary inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |
| Trauma | Non-inflammatory arthritis | Concordant |
| Gout | Primary inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |
| Gout | Inflammatory arthritis, no crystals | Concordant |
| Seronegative | Inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |
| Osteoarthritis | Non-inflammatory arthritis | Concordant |
| Gout | Inflammatory arthritis | Concordant |
| Gout | Inflammatory arthritis | Concordant |
| Seronegative | Primary inflammatory arthritis | Concordant |