Table 1 Demographics and clinical characteristics of IIM patients
Pt. no. | Age (y) | Sex | Diagnosis, clinical | Diagnosis, ACR/EULAR criteria, IIM probability (%) | Cancer (Y/N) | Muscle weakness (Y/N) | Muscle biopsy | Skin manifestations | Dysphagia (Y/N) | Autoantibodies (MSA/MAA) | Increased CK level (Y/N) | PYP uptake | FDG uptake |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 75.5 | F | IMNM | Probable IIM (86%), subgroup PM (IMNM) | N | Y | Inflammatory infiltrates | None | Y | Anti-SRP | Y | + | + |
2 | 74.7 | M | CAM | Definite IIM (100%), subgroup DM | Y | Y | No inflammation or perifascicular atrophy | Heliotrope rash, Gottron’s papules | Y | None | Y | + | ++ |
3 | 40.1 | F | DM | Definite IIM (100%), subgroup DM | N | Y | No inflammation or perifascicular atrophya | Heliotrope rash, Gottron’s papules | Y | None | Y | + | + |
4 | 70.0 | F | DM | Definite IIM (100%), subgroup DM | N | Y | Inflammatory infiltrates | Heliotrope rash, Gottron’s papules | Y, feeding tube | None | Y | + | +++ |
5 | 70.4 | M | IMNM | Possible IIM (53%) | N | Y | Necrosis | None | Y | None | Y | + | ++ |
6 | 76.7 | F | CAM | Definite IIM (100%), subgroup DM | Y | Y | Inflammatory infiltrates | Heliotrope rash, Gottron’s papules | N | None | N | ++ | + |
7 | 79.6 | F | PM | Probable IIM (86%), subgroup PM (IMNM) | N | Y | Inflammatory infiltrates | None | Y, feeding tube | Anti-Ro52 | Y | ++ | + |
8 | 21.3 | F | IMNM | Probable IIM (62%), subgroup PM (IMNM) | N | Y | Inflammatory infiltrates and necrosis | None | N | Anti-HMGCR | Y | NA | + |