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. 2022 Aug 24;83:104229. doi: 10.1016/j.ebiom.2022.104229

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.