Diagnostic criteria of PML
| Diagnosis | Typical Clinical Feature | Typical Imaging Feature | CSF JCV DNA | Typical Histopathology with Demonstration of JCV DNA/Protein |
|---|---|---|---|---|
| Definite PML | + | + | + | − |
| Definite PML | + | + | − | + |
| Presumptive PML | + | + | − | − |
Note:—+ indicates present; –, absent.