Table 3.
Percentage of lung involvement by different pathological patterns and histological findings in lung post-mortem biopsies of COVID-19 patients.
| Median (range), n=18 | |
|---|---|
| Normal lung (%) | 7·94 (0–35) |
| Acute/Exudative DAD (%) | 15·94 (0–93) |
| Intermediate DAD (%) | 40·88 (1–99) |
| Advanced DAD (%) | 1·88 (0–93) |
| Alveolar hemorrhage (%) | 0·69 (0–10) |
| Infarct (%) | 0 (0–9) |
| Bronchopneumonia (%) | 0 (0–16) |
| Arteriolar thrombosis (number)a | 0 (0–10) |
| Capillary thrombosis (sum)b | 0 (0–5) |
DAD: Diffuse alveolar damage.
a
Number of vessels with thrombosis in each patient. Fourteen out of 18 COVID-19 patients presented arteriolar thrombosis.
b
Sum of biopsied lung sites presenting capillary thrombosis in each patient. Eight out of the 18 COVID-19 patients presented capillary thrombosis.