Table 4 Staging according to the extent of regional involvement
From: Magnetic resonance imaging features of post-COVID-19 regional and invasive sino-nasal mucormycosis
Stage | Areas involved | N (%) |
|---|---|---|
Stage 1 | Limited to nasal mucosa | 2 (3.23) |
Stage 2 | + Paranasal sinuses | 13 (20.97) |
Stage 3 | + Orbit | 35 (56.45) |
Stage 4 | + Intracranial extension | 12 (19.35) |