Registered severe extra-articular manifestations and methods used for diagnosis, according to the organ systems affected
| Extra-articular manifestations | Method of diagnosis | No of patients (n=15) |
|---|---|---|
| HRCT, high resolution computed tomography. | ||
| Kidney | ||
| Amyloidosis | Biopsy | 3 |
| Glomerulonephritis | Biopsy | 2 |
| Lung | ||
| Fibrosis of the lung | HRCT | 4 |
| Pleuritis | x ray | 3 |
| Skin | ||
| Cutaneous vasculitis | Biopsy | 3 |
| Dermatomyositis | Biopsy | 1 |
| Neurological | ||
| Polyneuropathy | EMG | 2 |
| Mononeuritis | EMG | 1 |