Main clinical features associated with ICI pneumonitis or COVID-19 pneumonia
| ICIs | COVID-19 | |
| Fever | ✓ | ✓ |
| Dyspnea | ✓ | ✓ |
| Cough | ✓ | ✓ |
| Conjunctivitis | – | ✓ |
| Gastrointestinal manifestations | ||
| Diarrhea | ✓* | ✓ |
| Belching | – | ✓ |
| Nausea | – | ✓ |
| Emesis | – | ✓ |
*As a further immune-related adverse event.
ICI, immune checkpoint inhibitor.